SecuriTricks - backdoor

OptinMonster supply chain attack hits 1.2 million sites

An active supply-chain attack targeted over 1.2 million WordPress sites using OptinMonster, TrustPulse, and PushEngage plugins operated by Awesome Motive. Attackers injected malicious JavaScript into legitimate files served through Awesome Motive's CDN endpoints. The malware activates when a logged…

backdoor

supply-chain

Published: June 14, 2026

Downloadable IOCs: 10

Operation FlutterBridge: macOS Malvertising Campaign Spreads New FlutterShell Backdoor

A financially-motivated cybercrime cluster designated CL-CRI-1089 has launched Operation FlutterBridge, deploying FlutterShell backdoor malware targeting macOS systems through malvertising. Built with the Flutter framework, FlutterShell masquerades as legitimate applications including podcast playe…

Published: June 2, 2026

Downloadable IOCs: 9

Converging Interests: Analysis of Threat Clusters Targeting a Southeast Asian Government

Unit 42 researchers uncovered a series of cyberespionage campaigns targeting a Southeast Asian government organization between June and August 2025. Three distinct activity clusters were identified: Stately Taurus, CL-STA-1048, and CL-STA-1049. Stately Taurus used USB-propagated malware to deploy t…

Published: March 27, 2026

Linked vulnerabilities : CVE-2026-0628 (CVSS 8.8)

Downloadable IOCs: 34

EtherRAT & SYS_INFO Module: C2 on Ethereum (EtherHiding), Target Selection, CDN-Like Beacons

EtherRAT, a Node.js-based backdoor linked to a North Korean APT group, was detected in a retail customer's environment. It allows arbitrary command execution, extensive system information gathering, and asset theft. The malware uses 'EtherHiding' to store C2 addresses in Ethereum smart contracts, m…

Published: March 26, 2026

Downloadable IOCs: 10

Libyan Oil Refinery Among Targets in Long-running Likely Espionage Campaign

A series of attacks targeting Libyan organizations, including an oil refinery, a telecoms organization, and a state institution, occurred between November 2025 and February 2026. The campaign utilized the AsyncRAT backdoor, delivered through spear-phishing emails with Libya-themed lure documents. T…

Published: March 20, 2026

Downloadable IOCs: 29

New backdoor targeting Ukrainian entities with possible links to Laundry Bear

A new campaign targeting Ukrainian entities has been identified, attributed to actors linked to Russia. The campaign uses judicial and charity-themed lures to deploy a JavaScript-based backdoor called DRILLAPP, which runs through the Edge browser. This backdoor enables various actions including fil…

Published: March 17, 2026

Downloadable IOCs: 28

Middle East Conflict Fuels Opportunistic Cyber Attacks

The ongoing conflict in the Middle East has triggered a surge in cybercriminal activity. Over 8,000 newly registered domains with conflict-related keywords have been identified, many of which may be weaponized in future campaigns. Multiple cases of malicious activity have been observed, including t…

Published: March 6, 2026

Downloadable IOCs: 12

Iranian APT on Networks of U.S. Bank, Airport, Software Company

Iranian APT group Seedworm has been active on networks of multiple U.S. companies since February 2026, targeting a bank, airport, software company, and NGOs. The group deployed new backdoors named Dindoor and Fakeset, signed with certificates previously linked to Seedworm. The activity occurs amid …

critical infrastructure

iranian apt

pdq

geopolitical conflict

Published: March 5, 2026

Linked vulnerabilities : CVE-2023-6895, CVE-2017-7921

Downloadable IOCs: 25

New Dohdoor malware campaign targets education and health care

A malicious campaign by threat actor UAT-10027 has been targeting education and healthcare sectors in the United States since December 2025. The campaign utilizes a new backdoor called Dohdoor, which employs DNS-over-HTTPS for stealthy command-and-control communications and can download and execute…

Published: February 27, 2026

Downloadable IOCs: 10

Malicious Go 'crypto' Module Steals Passwords and Deploys Rekoobe Backdoor

A malicious Go module impersonating the legitimate golang.org/x/crypto has been discovered, containing a backdoor in ssh/terminal/terminal.go. This module captures passwords, exfiltrates them, and executes remote commands. The attack chain includes a Linux stager that installs an SSH key for persis…

cryptography-impersonation

Published: February 27, 2026

Downloadable IOCs: 10

APT37 Adds New Capabilities for Air-Gapped Networks

APT37, a DPRK-backed threat group, has launched a new campaign called Ruby Jumper, utilizing Windows shortcut files to initiate attacks with newly discovered tools. These tools include RESTLEAF, SNAKEDROPPER, THUMBSBD, and VIRUSTASK, which work together to deliver surveillance payloads like FOOTWIN…

Published: February 26, 2026

Downloadable IOCs: 3

Disrupting the GRIDTIDE Global Cyber Espionage Campaign

A global espionage campaign targeting telecommunications and government organizations across four continents has been disrupted. The threat actor, UNC2814, is suspected to be linked to China and has been active since 2017. The campaign utilized a sophisticated backdoor called GRIDTIDE, which levera…

Published: February 26, 2026

Downloadable IOCs: 18

Four Malicious NuGet Packages Target ASP.NET Developers With JIT Hooking and Credential Exfiltration

A NuGet supply chain attack involving four malicious packages targeting ASP.NET web application developers has been discovered. The campaign deploys a multi-stage payload where NCryptYo acts as a dropper, establishing a local proxy, while companion packages exfiltrate ASP.NET Identity data and acce…

credential-exfiltration

Published: February 24, 2026

Downloadable IOCs: 4

Cloud Atlas: Analysis of Phishing Campaign and VBShower Backdoor

The article analyzes a phishing campaign by the Cloud Atlas APT group targeting Russian organizations. It details five successful attacks on the same system over time, using malicious Microsoft Office documents to deliver the VBShower backdoor. The attackers used alternate data streams to hide mali…

alternate data streams

Published: February 23, 2026

Linked vulnerabilities : CVE-2018-0802

Downloadable IOCs: 10

Zero-day in Dell RecoverPoint for Virtual Machines (CVE-2026-22769)

A critical zero-day vulnerability in Dell RecoverPoint for Virtual Machines has been discovered and actively exploited. The flaw, identified as CVE-2026-22769, allows attackers to gain root-level access on affected systems. China-linked threat actor UNC6201 has been leveraging this vulnerability in…

Published: February 19, 2026

Linked vulnerabilities : CVE-2026-22769 (CVSS 10.0)

Downloadable IOCs: 5

The tablet conqueror and the links between major Android botnets

A new Android backdoor called Keenadu has been discovered embedded in the firmware of several tablet brands. It infects the libandroid_runtime.so library during firmware building, injecting itself into every app launched on the device. Keenadu provides attackers unrestricted control over victims' d…

Published: February 17, 2026

Downloadable IOCs: 6

A security alert regarding APT-C-28 (ScarCruft) using MiradorShell to launch a cyberattack.

A recent investigation reveals that the APT-C-28 (ScarCruft) group has expanded its targets to include the cryptocurrency industry. The group employs sophisticated phishing tactics, using LNK files disguised as PDFs to lure victims with investment proposals ranging from $1-3 million. Upon execution…

Published: February 9, 2026

Downloadable IOCs: 4

The Chrysalis Backdoor: A Deep Dive into Lotus Blossom's toolkit

Rapid7 Labs has uncovered a sophisticated campaign attributed to the Chinese APT group Lotus Blossom, involving a new custom backdoor named Chrysalis. The attack compromised Notepad++ infrastructure to deliver the backdoor. Analysis revealed multiple custom loaders, including one using Microsoft Wa…

Published: February 3, 2026

Downloadable IOCs: 34

eScan confirms update server breached to push malicious update

MicroWorld Technologies has confirmed that one of its update servers was breached and used to distribute a malicious update to some customers in the early hours of January 2026, reports BleepingComputer.

Published: January 29, 2026

Downloadable IOCs: 2

APT Attacks Target Indian Government Using SHEETCREEP, FIREPOWER, and MAILCREEP

A new campaign targeting Indian government entities was uncovered, utilizing three backdoors: SHEETCREEP, FIREPOWER, and MAILCREEP. These tools leverage legitimate cloud services like Google Sheets, Firebase, and Microsoft Graph API for command and control, enabling the attackers to blend in with n…

Published: January 28, 2026

Downloadable IOCs: 19

CoolClient backdoor updated, new data stealing tools used

The HoneyMyte APT group has enhanced its toolset with an updated CoolClient backdoor and new data stealing capabilities. The group targeted government entities in Asia and Europe, particularly Southeast Asia. CoolClient now features clipboard monitoring, HTTP proxy credential sniffing, and plugin s…

Published: January 27, 2026

Downloadable IOCs: 4

ShadowRelay: New Modular Backdoor in the Public Sector

A new modular backdoor called ShadowRelay was discovered on a compromised Exchange server in a government organization. The backdoor allows loading different plugins and demonstrates sophisticated design indicative of well-prepared attackers. It uses packet injection to hide network activity and ca…

Published: January 23, 2026

Linked vulnerabilities : CVE-2021-34473, CVE-2021-31207, CVE-2021-34523

Downloadable IOCs: 5

KONNI Adopts AI to Generate PowerShell Backdoors

A North Korea-linked threat actor known as KONNI has been observed conducting a phishing campaign targeting software developers and engineering teams, particularly those with blockchain expertise. The campaign uses AI-generated PowerShell backdoors and targets a broader range of countries in the AP…

Published: January 22, 2026

Downloadable IOCs: 34

Threat Actors Expand Abuse of Microsoft Visual Studio Code

North Korean threat actors have evolved their techniques in the Contagious Interview campaign, now abusing Microsoft Visual Studio Code task configuration files. The infection chain begins when a victim opens a malicious Git repository, often disguised as part of a recruitment process. If trust is …

Published: January 21, 2026

Downloadable IOCs: 8

Hunting Lazarus: Inside the Contagious Interview C2 Infrastructure

A North Korean malware was discovered in an Upwork cryptocurrency project, leading to a five-day investigation into active Lazarus Group infrastructure. The malware utilized three infection mechanisms: VSCode auto-execution, backend RCE via Function Constructor, and cookie payload delivery. The inf…

Published: January 15, 2026

Downloadable IOCs: 8

Targeted espionage leveraging geopolitical themes

A targeted malware campaign against U.S. government entities has been observed, utilizing a politically themed ZIP archive containing a loader executable and a malicious DLL. The DLL functions as a backdoor named LOTUSLITE, communicating with a hard-coded command-and-control server. The campaign de…

Published: January 15, 2026

Downloadable IOCs: 4

CNCERT: Risk Warning Regarding the "Black Cat" Gang's Use of Search Engines to Spread Counterfeit Notepad++ Download Remote Control Backdoors

CNCERT and Microstep Online jointly detected a cyberattack campaign launched by the "Black Cat" criminal gang. This gang uses search engine SEO (Search Engine Optimization) techniques to push meticulously crafted phishing websites to the top of search engine keyword results. After visiting these hi…

Published: January 9, 2026

Downloadable IOCs: 17

LongNosedGoblin tries to sniff out governmental affairs in Southeast Asia and Japan

ESET researchers have uncovered a new China-aligned APT group named LongNosedGoblin targeting governmental entities in Southeast Asia and Japan for cyberespionage. The group employs a varied custom toolset of C#/.NET applications and abuses Group Policy for lateral movement. Key tools include NosyH…

Published: January 3, 2026

Downloadable IOCs: 10

DeedRAT: Unpacking a Modern Backdoor's Playbook

DeedRAT is a sophisticated backdoor associated with the Chinese APT group Salt Typhoon, targeting critical sectors globally. It infiltrates systems through phishing campaigns, utilizing DLL sideloading to evade detection. The malware establishes persistence via registry run keys and service creatio…

Published: December 31, 2025

Downloadable IOCs: 4

Webrat, disguised as exploits, is spreading via GitHub repositories

A new malware campaign targeting security professionals and students has been uncovered. The threat actor behind Webrat is now disguising the backdoor as exploits and proof-of-concept code for high-profile vulnerabilities, distributing it through GitHub repositories. The malware, which previously s…

Published: December 23, 2025

Linked vulnerabilities : CVE-2025-59230 (CVSS 7.8), CVE-2025-59295 (CVSS 8.8), CVE-2025-10294 (CVSS 9.8), CVE-2025-11833 (CVSS 9.8), CVE-2025-11499 (CVSS 9.8), CVE-2025-12595 (CVSS 7.4), CVE-2025-12596 (CVSS 7.4), CVE-2025-55234, CVE-2025-54106, CVE-2025-54897

Downloadable IOCs: 5

UAT-9686 actively targets Cisco Secure Email Gateway and Secure Email and Web Manager

A Chinese-nexus advanced persistent threat actor, UAT-9686, is actively targeting Cisco AsyncOS Software for Secure Email Gateway and Secure Email and Web Manager. The campaign, ongoing since late November 2025, exploits non-standard configurations to execute system-level commands and deploy a pers…

Published: December 17, 2025

Downloadable IOCs: 4

UDPGangster Campaigns Target Multiple Countries

UDPGangster, a UDP-based backdoor associated with the MuddyWater threat group, has been observed targeting users in Turkey, Israel, and Azerbaijan. The malware is delivered through malicious Microsoft Word documents with embedded VBA macros, employing sophisticated anti-analysis techniques to evade…

Published: December 10, 2025

Downloadable IOCs: 15

Technical Analysis of Matanbuchus 3.0

Matanbuchus, a C++ malicious downloader offered as Malware-as-a-Service since 2020, has evolved to version 3.0. It comprises a downloader and main module, utilizing obfuscation techniques like junk code, encrypted strings, and API hashing. The malware implements anti-analysis features, including an…

Published: December 3, 2025

Downloadable IOCs: 5

Shai-Hulud V2 Poses Risk to NPM Supply Chain

A second wave of the Shai-Hulud malware campaign, dubbed 'The Second Coming', has emerged targeting the npm ecosystem. This advanced software supply chain attack has compromised over 700 npm packages and created more than 27,000 malicious GitHub repositories. Shai-Hulud V2 introduces critical advan…

Published: December 3, 2025

Downloadable IOCs: 3

Unraveling Water Saci's New Multi-Format, AI-Enhanced Attacks Propagated via WhatsApp

The Water Saci campaign in Brazil is using advanced techniques to deliver banking trojans through WhatsApp. The attack chain involves various file formats and scripting languages, designed to bypass detection and increase analysis complexity. Attackers have transitioned from PowerShell to Python fo…

Published: December 2, 2025

Downloadable IOCs: 18

Snakes by the riverbank

ESET researchers have identified new MuddyWater activity targeting organizations in Israel and Egypt. The Iran-aligned cyberespionage group deployed custom tools to improve defense evasion and persistence, including a Fooder loader to execute the MuddyViper backdoor. The campaign demonstrates a mor…

critical infrastructure

Published: December 2, 2025

Downloadable IOCs: 9

Shai-Hulud 2.0: Aggressive & Automated, One Of Fastest Spreading NPM Supply Chain Attacks Ever Observed

In November 2025, security researchers identified Shai-Hulud 2.0, an aggressive and automated supply-chain attack targeting the npm ecosystem. This second wave of the Shai-Hulud campaign demonstrated unprecedented automation and propagation speed, compromising hundreds of npm packages within hours.…

backdoor

worm

credential harvesting

Published: November 27, 2025

Downloadable IOCs: 4

A Closer Look at Outlook Macros and More

The analysis examines NotDoor, a backdoor utilizing Outlook macros for persistence and lateral movement. It stages files in C:\ProgramData, employing DLL sideloading with OneDrive.exe. The malware creates directories, executes encoded PowerShell commands, and modifies registry entries to enable mac…

registry modification

outlook macros

Published: November 15, 2025

Downloadable IOCs: 0

Lazarus Group targets Aerospace and Defense with new Comebacker variant

This analysis details a recent espionage campaign by the DPRK-nexus threat actor Lazarus Group targeting the aerospace and defense sectors. The campaign employs a new variant of the Comebacker backdoor, showcasing the actor's ongoing refinement of their malware arsenal. The attackers use highly spe…

Published: November 10, 2025

Downloadable IOCs: 15

DPRK's Playbook: HttpTroy and New BLINDINGCAN Variant

Recent investigations have uncovered two new toolsets from North Korean threat actors. Kimsuky deployed a new backdoor called HttpTroy, targeting a victim in South Korea through a VPN invoice-themed attack. The attack chain involves a dropper, a loader called MemLoad, and the HttpTroy backdoor, whi…

Published: November 3, 2025

Downloadable IOCs: 15

Oracle E-Business Suite CVE-2025-61882 - Malware Analysis

A critical vulnerability in Oracle E-Business Suite (CVE-2025-61882) is being actively exploited. The attack involves dropping malicious template files through a Python script, which are then activated by previewing. Two types of templates are used: one contacting a hardcoded IP address to execute …

oracle e-business suite

2025-10-08

java exploitation

arbitrary code execution

Published: October 8, 2025

Linked vulnerabilities : CVE-2025-61882 (CVSS 9.8)

Downloadable IOCs: 9

WARMCOOKIE One Year Later: New Features and Fresh Insights

The WARMCOOKIE backdoor continues to evolve, with ongoing updates and new infections observed. Recent developments include new handlers for executing various file types, a string bank for defense evasion, and code optimizations. A campaign ID field has been added, providing context for operators. I…

Published: October 6, 2025

Downloadable IOCs: 0

Gamaredon X Turla collaboration

ESET Research has uncovered collaboration between notorious APT groups Gamaredon and Turla, both associated with Russia's FSB, targeting high-profile victims in Ukraine. The research reveals Gamaredon tools being used to restart and deploy Turla's Kazuar backdoor on compromised machines. This marks…

Published: September 27, 2025

Downloadable IOCs: 0

Updates Arsenal with BAITSWITCH and SIMPLEFIX

A new multi-stage ClickFix campaign, attributed to the Russia-linked APT group COLDRIVER, has been discovered targeting Russian civil society members. The campaign employs social engineering techniques to trick users into executing malicious commands, leading to the deployment of two new malware fa…

Published: September 24, 2025

Downloadable IOCs: 0

NodeJS backdoors delivering proxyware and monetization schemes

This report details a campaign involving NodeJS backdoors used to distribute proxyware and monetization schemes. The attackers employ Inno setup installers to drop PowerShell scripts that download and execute NodeJS packages with malicious JavaScript. The backdoors collect system information, commu…

Published: September 24, 2025

Downloadable IOCs: 0

Hidden WordPress Backdoors Creating Admin Accounts

Two malicious files were discovered on a compromised WordPress website, designed to manipulate administrator accounts and maintain unauthorized access. The first file, disguised as a plugin called 'DebugMaster Pro', created a secret admin user and communicated with a command and control server. The…

Published: September 24, 2025

Downloadable IOCs: 0

Infected Steam game "BlockBlasters" downloads crypto stealer malware

A 2D platformer game called BlockBlasters on Steam has been infected with malware disguised as a patch. The malicious update, released on August 30, 2025, contains files that exhibit multiple malicious behaviors, including stealing crypto wallet data and other sensitive information from users' PCs.…

Published: September 22, 2025

Downloadable IOCs: 0

Updated Toneshell backdoor and novel SnakeDisk USB worm dropped

In mid-2025, China-aligned threat actor Hive0154 deployed new malware variants, including an updated Toneshell backdoor and a novel USB worm called SnakeDisk. Toneshell9 evades detection and supports C2 communication through local proxies. SnakeDisk only executes on devices in Thailand, propagating…

Published: September 11, 2025

Downloadable IOCs: 7

EggStreme Malware: Unpacking a New APT Framework Targeting a Philippine Military Company

A Chinese APT group compromised a Philippine military company using a new, fileless malware framework called EggStreme. This sophisticated multi-stage toolset achieves persistent, low-profile espionage by injecting malicious code directly into memory and leveraging DLL sideloading. The core compone…

eggstremereflectiveloader

Published: September 10, 2025

Downloadable IOCs: 12

Learn about ChillyHell, a modular Mac backdoor

ChillyHell is a sophisticated macOS backdoor discovered in 2021 that has evaded detection by antivirus vendors. It is a modular C++ malware targeting Intel architectures, using multiple persistence mechanisms and communication protocols. The backdoor performs host profiling, establishes persistence…

Published: September 10, 2025

Downloadable IOCs: 0

GhostRedirector poisons Windows servers: Backdoors with a side of Potatoes

ESET researchers have identified a new threat actor named GhostRedirector that has compromised at least 65 Windows servers, primarily in Brazil, Thailand, and Vietnam. The actor utilizes two previously undocumented tools: a passive C++ backdoor called Rungan and a malicious Internet Information Ser…

Published: September 8, 2025

Downloadable IOCs: 24

Analyzing NotDoor: Inside APT28's Expanding Arsenal

LAB52 has identified a new backdoor called NotDoor, attributed to APT28, a Russian intelligence-linked threat group. NotDoor is a VBA macro for Outlook that monitors incoming emails for specific trigger words, enabling data exfiltration, file uploads, and command execution on victim computers. The …

Published: September 3, 2025

Downloadable IOCs: 2

AI Waifu RAT: A Ring3 malware-like RAT based on LLM manipulation is circulating in the wild

A niche LLM role-playing community is being targeted by a sophisticated social engineering attack disguised as an AI character enhancement tool. The 'AI Waifu RAT' is a Remote Access Trojan marketed as a feature allowing AI characters to interact with users' computers. The RAT, distributed under th…

Published: September 1, 2025

Downloadable IOCs: 7

Backdoor in "AppSuite PDF Editor": A Detailed Technical Analysis

A detailed analysis of a malicious PDF editor application called AppSuite PDF Editor reveals it to be a sophisticated backdoor. The software, masquerading as a legitimate productivity tool, is distributed through high-ranking websites. Once installed, it creates scheduled tasks and establishes pers…

Published: August 28, 2025

Downloadable IOCs: 9

The Covert Dual-Mode Backdoor Threat

MystRodX is a sophisticated backdoor discovered in June 2025, featuring stealth and flexibility. It uses multi-layer encryption for sensitive information and can operate in active or passive modes. The backdoor supports file management, port forwarding, reverse shell, and socket management. Its pas…

dual-process guardian

dns trigger

passive mode

Published: August 28, 2025

Downloadable IOCs: 12

Android backdoor spies on Russian business employees

A sophisticated Android backdoor named Android.Backdoor.916.origin is targeting Russian business representatives. The malware, disguised as an antivirus app called 'GuardCB', has extensive surveillance capabilities including intercepting calls, streaming camera footage, stealing data from messaging…

android.backdoor.916.origin

targeted-attack

Published: August 25, 2025

Downloadable IOCs: 0

A Cereal Offender: Analyzing the CORNFLAKE.V3 Backdoor

This analysis details a campaign involving two threat groups, UNC5518 and UNC5774, deploying the CORNFLAKE.V3 backdoor. UNC5518 compromises legitimate websites to serve fake CAPTCHA pages, luring visitors to execute a downloader script. UNC5774 then uses this access to deploy CORNFLAKE.V3, a sophis…

Published: August 21, 2025

Downloadable IOCs: 0

Dissecting PipeMagic: Inside the architecture of a modular backdoor framework

PipeMagic is a sophisticated modular backdoor used by the Storm-2460 threat actor, disguised as a legitimate ChatGPT Desktop Application. It employs a highly flexible architecture with multiple linked list structures for payload management, execution, and networking. The malware communicates with i…

Published: August 18, 2025

Linked vulnerabilities : CVE-2025-29824 (CVSS 7.8)

Downloadable IOCs: 4

Threat Bulletin: Fire in the Woods – A New Variant of FireWood

A new, low-detected variant of the FireWood Linux backdoor has been discovered, showing changes in implementation and configuration while maintaining core functionality. This backdoor, linked to the 'Project Wood' malware lineage, operates as a remote access trojan on Linux systems, using kernel-le…

Published: August 15, 2025

Downloadable IOCs: 0

A New Threat Actor Targeting Geopolitical Hotbeds

Bitdefender Labs has uncovered a new threat actor group named Curly COMrades, operating since mid-2024 to support Russian interests. The group targets critical organizations in countries experiencing geopolitical shifts, focusing on judicial and government bodies in Georgia and an energy distributi…

Published: August 12, 2025

Downloadable IOCs: 0

ToolShell: An all-you-can-eat buffet for threat actors

A set of zero-day vulnerabilities in SharePoint Server, dubbed ToolShell, has been exploited in the wild since July 17, 2025. The vulnerabilities, CVE-2025-53770 and CVE-2025-53771, allow remote code execution and server spoofing, affecting on-premises SharePoint servers. Attackers have been chaini…

Published: August 12, 2025

Linked vulnerabilities : CVE-2025-49704

Downloadable IOCs: 20

Update WinRAR tools now: RomCom and others exploiting zero-day vulnerability

A zero-day vulnerability in WinRAR, CVE-2025-8088, has been discovered being exploited in the wild by the Russia-aligned group RomCom. The vulnerability allows attackers to hide malicious files in archives, which are silently deployed when extracted. The exploit was used in spearphishing campaigns …

Published: August 11, 2025

Linked vulnerabilities : CVE-2023-36884, CVE-2025-8088

Downloadable IOCs: 9

Atomic macOS Stealer includes a backdoor for persistent access

The Atomic macOS Stealer (AMOS) has received a major update, now including an embedded backdoor for persistent access to compromised Mac devices. This upgrade allows attackers to maintain access, run remote tasks, and gain extended control over infected machines. The Russia-affiliated AMOS threat g…

Published: August 8, 2025

Downloadable IOCs: 6

Project AK47: Uncovering a Link to the SharePoint Vulnerability Attacks

Unit 42 has identified significant overlaps between Microsoft's reported ToolShell activity and a threat cluster they track as CL-CRI-1040. This cluster utilizes a tool set called Project AK47, which includes a multi-protocol backdoor, custom ransomware, and loaders. The activity is linked to the e…

Published: August 6, 2025

Linked vulnerabilities : CVE-2024-1182 (CVSS 7.0), CVE-2024-7587 (CVSS 7.8), CVE-2024-8299 (CVSS 7.8), CVE-2025-0282 (CVSS 9.0), CVE-2025-0283 (CVSS 7.0), CVE-2024-53870 (CVSS 3.3), CVE-2025-31324 (CVSS 10.0), CVE-2025-53770 (CVSS 9.8), CVE-2025-53771 (CVSS 7.1), CVE-2025-49704, CVE-2025-49706

Downloadable IOCs: 27

LNK Trojan delivers REMCOS

This report details a multi-stage malware campaign delivering the REMCOS backdoor via a malicious Windows LNK shortcut file. The attack begins with social engineering, leveraging PowerShell for initial execution and deploys a persistent backdoor capable of full system compromise. The infection chai…

Published: July 30, 2025

Downloadable IOCs: 8

DeedRAT Backdoor Enhanced with Advanced Capabilities

Chinese threat actors have launched a new phishing campaign using DeedRAT, a modular backdoor. The campaign exploits a DLL side-loading vulnerability in VIPRE Antivirus Premium's MambaSafeModeUI.exe. DeedRAT now includes a new NetAgent module, expanding its capabilities. The malware uses TCP for C2…

antivirus exploitation

deedrat

netagent

Published: July 21, 2025

Downloadable IOCs: 4

Ongoing SonicWall Secure Mobile Access (SMA) Exploitation Campaign using the OVERSTEP Backdoor

A financially-motivated threat actor, UNC6148, is targeting fully patched end-of-life SonicWall SMA 100 series appliances. They are using stolen credentials and OTP seeds from previous intrusions to regain access. The actor has deployed a new persistent backdoor/user-mode rootkit called OVERSTEP, w…

Published: July 18, 2025

Linked vulnerabilities : CVE-2025-32819 (CVSS 8.8), CVE-2021-20039, CVE-2023-44221, CVE-2021-20035, CVE-2024-38475, CVE-2021-20038

Downloadable IOCs: 4

Evolution of macOS Odyssey Stealer: New Techniques & Signed Malware

A new variant of the Odyssey infostealer for macOS has been discovered, featuring code signing, notarization, and a persistent backdoor. The malware mimics a Google Meet updater and uses a SwiftUI-based 'Technician Panel' for social engineering. It steals sensitive data, including passwords, browse…

Published: July 17, 2025

Downloadable IOCs: 0

GhostContainer backdoor for Exchange servers

A sophisticated backdoor targeting Exchange servers of high-value organizations in Asia has been discovered. The malware, named GhostContainer, is a multi-functional backdoor that can be dynamically extended with additional modules. It leverages several open-source projects and employs various evas…

Published: July 17, 2025

Downloadable IOCs: 1

Rainbow Hyena strikes again: new backdoor and shift in tactics

A new phishing campaign targeting healthcare and IT organizations in Russia has been attributed to the Rainbow Hyena cluster. The attackers used compromised email addresses to distribute malicious attachments, including polyglot files and LNK files mimicking legitimate documents. A new custom-built…

Published: July 15, 2025

Downloadable IOCs: 0

Analysis of APT-C-55 (Kimsuky) Organization's HappyDoor Backdoor Attack Based on VMP Strong Shell

The APT-C-55 (Kimsuky) group, a North Korean threat actor, has launched a new attack campaign targeting South Korea. They used a disguised Bandizip installation package to deliver malicious code and a VMP-protected HappyDoor trojan for espionage activities. The attack involves remote script loading…

Published: July 10, 2025

Downloadable IOCs: 6

macOS.ZuRu Resurfaces | Modified Khepri C2 Hides Inside Doctored Termius App

A new variant of macOS.ZuRu malware has been discovered, targeting users through a trojanized version of the Termius app. This backdoor, initially noted in 2021, now uses a modified Khepri C2 framework for post-infection operations. The malware is delivered via a .dmg disk image containing a hacked…

Published: July 10, 2025

Downloadable IOCs: 4

Hacker Exploit Social Security Statement Theme to Target Over 2,000 Victims with Malware

A sophisticated phishing campaign has targeted over 2,000 individuals by exploiting the theme of official Social Security statements. Cybercriminals used a convincing phishing lure, mimicking legitimate communication from the Social Security Administration. The attack involved a URL directing victi…

Published: June 26, 2025

Downloadable IOCs: 2

Threat actor Banana Squad exploits GitHub repos in new campaign

ReversingLabs researchers have uncovered a new campaign by the threat actor Banana Squad, involving over 60 GitHub repositories containing hundreds of trojanized Python files. The attackers create fake user accounts to host malicious repositories that mimic legitimate ones, using a technique that h…

software supply chain

trojanized repositories

Published: June 20, 2025

Downloadable IOCs: 275

Resurgence of the Prometei Botnet

Unit 42 researchers identified a new wave of Prometei botnet attacks in March 2025. The malware, which includes Linux and Windows variants, allows remote control of compromised systems for cryptocurrency mining and credential theft. Prometei is actively developed, incorporating new modules and meth…

Published: June 20, 2025

Downloadable IOCs: 11

Stealthy GitHub Malware Campaign Targets Devs

A new campaign exploiting GitHub to distribute malicious Python code disguised as legitimate hacking tools has been uncovered. The operation, attributed to the group known as Banana Squad, used 67 repositories hosting trojanized files that mimicked benign open-source projects. The attackers exploit…

Published: June 19, 2025

Downloadable IOCs: 2

Beware of AI Pickpockets: Pickai Backdoor Spreading Through ComfyUI Vulnerability

A new backdoor named Pickai is exploiting ComfyUI vulnerabilities to spread and steal sensitive AI data. Developed in C++, Pickai offers remote command execution and reverse shell capabilities with strong persistence and evasion techniques. It uses multiple C2 servers for redundancy and has infecte…

Published: June 13, 2025

Downloadable IOCs: 9

Eggs in a Cloudy Basket: Skeleton Spider's Trusted Cloud Malware Delivery

Skeleton Spider, also known as FIN6, is a financially motivated cybercrime group that has evolved from POS breaches to broader enterprise threats. They employ social engineering tactics, posing as job seekers on platforms like LinkedIn to deliver phishing messages. Their preferred payload is more_e…

Published: June 11, 2025

Downloadable IOCs: 24

Whispering in the dark

ESET researchers uncovered a cyberespionage campaign by BladedFeline, an Iran-aligned APT group likely tied to OilRig. The group has targeted Kurdish and Iraqi government officials since at least 2017, using various malicious tools including the Whisper backdoor, PrimeCache IIS module, and reverse …

Published: June 10, 2025

Downloadable IOCs: 12

BladedFeline: Whispering in the dark

ESET researchers have uncovered a cyberespionage campaign conducted by BladedFeline, an Iran-aligned APT group likely tied to OilRig. The group has been targeting Kurdish and Iraqi government officials since at least 2017, using various malicious tools including reverse tunnels, backdoors, and a ma…

Published: June 6, 2025

Downloadable IOCs: 3

GreyNoise Discovers Stealthy Backdoor Campaign Affecting Thousands of ASUS Routers

A sophisticated campaign targeting ASUS routers has been uncovered, compromising thousands of devices. The attackers employ brute-force attempts, authentication bypasses, and exploit CVE-2023-39780 to gain initial access. They establish persistence by enabling SSH access on a custom port and insert…

authentication bypass

Published: June 4, 2025

Downloadable IOCs: 3

The strange tale of ischhfd83: When cybercriminals eat their own

This investigation uncovered a large-scale campaign involving backdoored GitHub repositories targeting game cheaters and inexperienced cybercriminals. The threat actor, possibly linked to a Distribution-as-a-Service operation, uses multiple types of backdoors and a convoluted infection chain leadin…

Published: June 4, 2025

Downloadable IOCs: 52

Thousands of ASUS Routers Hijacked in Stealthy Backdoor Campaign

A sophisticated hacking campaign has compromised approximately 9000 ASUS routers, creating persistent backdoors that survive firmware updates and reboots. The attackers utilize the routers' legitimate features to maintain long-term access without dropping malware or leaving traces. This operation a…

operational relay box

asus routers

CVE-2023-39780

Published: May 29, 2025

Downloadable IOCs: 0

Vietnam-Nexus Hackers Distribute Malware Via Fake AI Video Generators

A hacking group with alleged ties to Vietnam has been exploiting social media ads promoting AI video generators to distribute malware since mid-2024. The campaign, discovered by Mandiant, uses fake websites mimicking legitimate AI tools to deploy payloads including Python-based infostealers and bac…

Published: May 28, 2025

Downloadable IOCs: 1

Custom Arsenal Developed to Target Multiple Industries

Earth Lamia, an APT threat actor, has been targeting organizations in Brazil, India, and Southeast Asia since 2023. The group exploits web application vulnerabilities, particularly SQL injection, to gain access to targeted systems. They have developed custom tools like PULSEPACK backdoor and Bypass…

vulnerability exploitation

brute ratel

multi-industry targeting

Published: May 27, 2025

Linked vulnerabilities : CVE-2024-9047 (CVSS 9.8), CVE-2024-51378 (CVSS 10.0), CVE-2024-51567 (CVSS 10.0), CVE-2024-56145, CVE-2025-31324 (CVSS 10.0), CVE-2017-9805, CVE-2024-27199, CVE-2024-27198, CVE-2021-22205

Downloadable IOCs: 185

Yet Another NodeJS Backdoor (YaNB): A Modern Challenge

A resurgence in malicious campaigns exploiting deceptive CAPTCHA verifications has been observed, tricking users into executing NodeJS-based backdoors and deploying sophisticated Remote Access Trojans. The attack begins with a malicious NodeJS script connecting to attacker-controlled infrastructure…

system reconnaissance

Published: May 16, 2025

Downloadable IOCs: 11

Backdoor implant discovered on PyPI posing as debugging utility

A sophisticated malicious package named 'dbgpkg' was detected on PyPI, masquerading as a Python debugging utility. The package implants a backdoor on systems, enabling execution of malicious code and data exfiltration. It uses function wrapping techniques to evade detection and is believed to be pa…

global socket toolkit

requestsdev

discordpydebug

Published: May 15, 2025

Downloadable IOCs: 0

Technical Analysis of TransferLoader

TransferLoader is a newly identified malware loader active since February 2025. It comprises multiple components including a downloader, backdoor, and specialized loader. The malware employs various anti-analysis techniques and code obfuscation to hinder reverse engineering. TransferLoader has been…

Published: May 15, 2025

Downloadable IOCs: 7

Marbled Dust leverages zero-day in Output Messenger for regional espionage

A Türkiye-affiliated espionage threat actor, Marbled Dust, has been exploiting a zero-day vulnerability in Output Messenger since April 2024. The attacks target Kurdish military entities in Iraq, allowing the actor to deliver malicious files and exfiltrate data. The exploit involves a directory tra…

Published: May 13, 2025

Linked vulnerabilities : CVE-2025-27920 (CVSS 9.8), CVE-2025-27921 (CVSS 6.1)

Downloadable IOCs: 3

Venom Spider Uses Server-Side Polymorphism to Weave a Web Around Victims

Arctic Wolf Labs discovered a new campaign by Venom Spider targeting corporate HR departments with fake resumes containing the More_eggs backdoor. The financially motivated threat group uses spear-phishing emails and abuses legitimate job platforms to apply for real jobs. The backdoor can steal cre…

Published: May 3, 2025

Downloadable IOCs: 3

Outlaw cybergang attacking targets worldwide

A recent incident response case in Brazil revealed a Perl-based crypto mining botnet called Outlaw, also known as Dota, targeting Linux environments. The threat actor exploits weak SSH credentials, downloads malicious scripts, and deploys an XMRig miner for Monero cryptocurrency. The botnet include…

Published: April 29, 2025

Downloadable IOCs: 0

Sophisticated backdoor mimicking secure networking software updates

A sophisticated backdoor targeting Russian organizations in government, finance, and industry sectors was discovered masquerading as updates for ViPNet secure networking software. The malware, distributed in LZH archives, exploits a path substitution technique to execute a malicious loader that dep…

heur:trojan.win32.loader.gen

path substitution

vipnet

Published: April 22, 2025

Downloadable IOCs: 0

Two sides of the same coin

This intelligence report analyzes the similarities between two previously separate APT groups, Team46 and TaxOff, concluding they are likely the same entity. The analysis covers their shared tactics, techniques, and procedures, including similar PowerShell commands, loader functionality, and infras…

Published: April 18, 2025

Downloadable IOCs: 0

BRICKSTORM Backdoor Analysis: A Persistent Espionage Threat to European Industries

This analysis examines BRICKSTORM, an espionage backdoor linked to China-nexus cluster UNC5221. It details newly identified Windows variants, expanding on previous Linux presence. The backdoor, used in long-term espionage campaigns, targets European industries of strategic interest to China. BRICKS…

Published: April 16, 2025

Downloadable IOCs: 4

Renewed APT29 Phishing Campaign Against European Diplomats

A sophisticated phishing campaign targeting European diplomatic entities has been uncovered, attributed to the Russia-linked threat group APT29. The attackers impersonate a major European foreign affairs ministry, sending fake invitations to wine tasting events. The campaign employs a new loader ca…

Published: April 15, 2025

Downloadable IOCs: 13

Lotus Blossom espionage group targets multiple industries with different versions of Sagerunex and hacking tools

The Lotus Blossom espionage group has been conducting cyber espionage campaigns targeting government, manufacturing, telecommunications, and media sectors in the Philippines, Vietnam, Hong Kong, and Taiwan. The group employs various versions of the Sagerunex backdoor, including new variants that us…

Published: April 4, 2025

Downloadable IOCs: 0

BeaverTail and Tropidoor Malware Distributed via Recruitment Emails

A sophisticated malware campaign has been uncovered, involving the distribution of BeaverTail and Tropidoor malware through fake recruitment emails. The attackers, suspected to be of North Korean origin, impersonated a developer community to lure victims into downloading malicious code. The campaig…

Published: April 3, 2025

Downloadable IOCs: 6

TookPS distributed under the guise of UltraViewer, AutoCAD, and Ableton

A malware campaign is distributing the TookPS downloader by impersonating popular software like UltraViewer, AutoCAD, SketchUp, Ableton, and Quicken. The malware establishes an SSH tunnel for remote access and deploys additional payloads like TeviRat and Lapmon backdoors. The attackers gain full sy…

software impersonation

Published: April 3, 2025

Downloadable IOCs: 17

From Contagious to ClickFake Interview: Lazarus leveraging the ClickFix tactic

Lazarus, a North Korean state-sponsored threat actor, has launched a new campaign called ClickFake Interview targeting cryptocurrency job seekers. This campaign, an evolution of the previously documented Contagious Interview, uses fake job interview websites to deploy the GolangGhost backdoor on Wi…

Published: April 1, 2025

Downloadable IOCs: 86

A Deep Dive into Water Arsenal and Infrastructure

Water Gamayun, a suspected Russian threat actor, exploits the MSC EvilTwin zero-day vulnerability (CVE-2025-26633) to compromise systems and exfiltrate data. The group uses custom payloads like EncryptHub Stealer variants, SilentPrism and DarkWisp backdoors, as well as known malware like Stealc and…

Published: March 29, 2025

Downloadable IOCs: 0

CVE-2025-26633: How Water Gamayun Weaponizes MUIPath using MSC EvilTwin

Trend Research uncovered a campaign by the Russian threat actor Water Gamayun that exploits a zero-day vulnerability in the Microsoft Management Console framework to execute malicious code, named MSC EvilTwin (CVE-2025-26633).

Published: March 25, 2025

Linked vulnerabilities : CVE-2025-26633 (CVSS 7.0)

Downloadable IOCs: 58

Off the Beaten Path: Recent Unusual Malware

The article examines three unusual malware samples: a C++/CLI IIS backdoor enabling stealthy remote command execution, a bootkit leveraging the GRUB 2 bootloader to gain early system control and persistence, and a cross-platform post-exploitation framework developed in C++. These cases highlight ev…

dixie-playing bootkit

grub

2025-03-17

Published: March 17, 2025

Downloadable IOCs: 7

Credit Card Skimmer and Backdoor on WordPress E-commerce Site

A sophisticated malware attack targeting WordPress WooCommerce sites was discovered, involving multiple components: a credit card skimmer, a hidden backdoor file manager, and a reconnaissance script. The attack focused on financial gain and long-term control. The skimmer, injected into the checkout…

Published: March 15, 2025

Downloadable IOCs: 0

SocGholish's Intrusion Techniques Facilitate Distribution of RansomHub Ransomware

SocGholish, a malware-as-a-service framework, is being used to deploy RansomHub ransomware. It compromises legitimate websites, redirecting visitors to fake browser updates that deliver malicious payloads. The highly obfuscated JavaScript loader evades detection and executes various tasks, includin…

Published: March 14, 2025

Downloadable IOCs: 0

BADBOX 2.0 Targets Consumer Devices with Multiple Fraud Schemes

HUMAN's Satori Threat Intelligence team uncovered and partially disrupted BADBOX 2.0, a complex fraud operation targeting low-cost consumer devices. This operation, an expansion of the 2023 BADBOX scheme, infected over 1 million Android Open Source Project devices worldwide with a backdoor called B…

Published: March 6, 2025

Downloadable IOCs: 59

Stealers and backdoors are spreading under the guise of a DeepSeek client

Cybercriminals are exploiting the popularity of DeepSeek, a powerful reasoning large language model, by creating fake websites that mimic the official DeepSeek chatbot site and distribute malicious code disguised as a client. Three main schemes were identified: a Python stealer targeting user data …

Published: March 6, 2025

Downloadable IOCs: 9

Call It What You Want: Threat Actor Delivers Highly Targeted Multistage Polyglot Malware

A highly targeted email-based campaign was identified, focusing on aviation and satellite communications organizations in the United Arab Emirates. The campaign utilized a compromised entity to send customized malicious messages, leading to the discovery of a new backdoor named Sosano. This malware…

Published: March 4, 2025

Downloadable IOCs: 0

Squidoor: Suspected Chinese Threat Actor’s Backdoor Targets Global Organizations

Since at least March 2023, a suspected Chinese threat actor has been targeting government, defense, telecommunications, education, and aviation sectors in Southeast Asia and South America. The attackers employ a sophisticated backdoor known as Squidoor, which affects both Windows and Linux systems.…

Published: February 27, 2025

Downloadable IOCs: 30

Auto-Color: An Emerging and Evasive Linux Backdoor

Auto-color is a newly discovered Linux malware that employs sophisticated evasion techniques. It renames itself to benign-looking filenames, hides remote C2 connections using advanced methods similar to Symbiote malware, and uses proprietary encryption for communication. The malware installs a mali…

Published: February 25, 2025

Downloadable IOCs: 10

Malicious Signal, Line, and Gmail Installers Target Chinese-Speaking Users with Backdoors

A malicious campaign is targeting Chinese-speaking users by distributing backdoored executables through fake download pages for popular apps like Signal, Line, and Gmail. The attackers use seemingly unrelated domain names and rely on search engine manipulation to lure victims. The malware follows a…

backdoor

infostealer

search engine manipulation

Published: February 18, 2025

Downloadable IOCs: 0

Don't Ghost the SocGholish: GhostWeaver Backdoor

The article details a sophisticated malware infection chain involving SocGholish, MintsLoader, and the GhostWeaver backdoor. The attack begins with a fake browser update, progressing through multiple stages to deploy a PowerShell backdoor and various plugins. These components work together to steal…

Published: February 17, 2025

Downloadable IOCs: 14

The Anatomy of Abyss Locker Ransomware Attack

Abyss Locker (AKA Abyss ransomware) is a relatively new threat group that emerged in 2023, specializing in swift and decisive intrusions designed to cripple victims with ransomware. Abyss Locker was active throughout 2024, causing multiple incidents investigated by Sygnia. However, no recent techni…

Published: February 10, 2025

Downloadable IOCs: 15

Not-so-SimpleHelp exploits enabling deployment of Sliver backdoor

A sophisticated breach was identified where threat actors exploited vulnerabilities in SimpleHelp's Remote Monitoring and Management client to infiltrate a network. The attack involved post-compromise tactics including network discovery, administrator account creation, and persistence establishment…

Published: February 7, 2025

Downloadable IOCs: 6

New TorNet backdoor seen in widespread campaign

A financially motivated threat actor has been conducting a malicious campaign since July 2024, primarily targeting users in Poland and Germany. The campaign uses phishing emails impersonating financial institutions and companies to deliver various payloads, including a new backdoor called TorNet. T…

Published: January 28, 2025

Downloadable IOCs: 0

Supply chain of Korean VPN service compromised

ESET researchers have uncovered a supply-chain attack against a South Korean VPN provider by a previously unknown China-aligned APT group named PlushDaemon. The attackers replaced the legitimate VPN installer with a malicious version that deployed their SlowStepper backdoor, a feature-rich implant …

Published: January 22, 2025

Downloadable IOCs: 0

Exploitation in the Wild of Aviatrix Controller RCE (CVE-2024-50603)

A critical code execution vulnerability, CVE-2024-50603, affecting Aviatrix Controller has been observed being exploited in the wild. This unauthenticated remote code execution flaw allows attackers to execute arbitrary commands on the system, potentially leading to privilege escalation in AWS envi…

Published: January 13, 2025

Linked vulnerabilities : CVE-2024-50603 (CVSS 10.0), CVE-2025-0282 (CVSS 9.0), CVE-2025-0283 (CVSS 7.0), CVE-2021-40870

Downloadable IOCs: 6

Analysis of the attack activities of APT-C-26 (Lazarus) using weaponized IPMsg software

The Lazarus group, a highly active APT organization, has been observed weaponizing the IPMsg installer for attacks. When executed, the malicious installer releases the official IPMsg version 5.6.18.0 to deceive users while activating a malicious DLL in memory. This DLL connects to a remote control …

Published: January 2, 2025

Downloadable IOCs: 3

New Yokai Side-loaded Backdoor Targets Thai Officials

A new backdoor named Yokai has been discovered targeting Thai officials. The malware is distributed via RAR files containing shortcut files that create decoy documents and execute a dropper. The dropper deploys a legitimate iTop Data Recovery application used to side-load the Yokai backdoor DLL. Yo…

Published: December 16, 2024

Downloadable IOCs: 20

Under the SADBRIDGE with GOSAR: QUASAR Gets a Golang Rewrite

Elastic Security Labs has uncovered a new intrusion set targeting Chinese-speaking regions, dubbed REF3864. The threat group employs a custom loader called SADBRIDGE to deploy GOSAR, a Golang-based reimplementation of the QUASAR backdoor. The infection chain involves trojanized MSI installers masqu…

Published: December 16, 2024

Downloadable IOCs: 13

Black and White Domination: Glutton Trojan Lurks in Mainstream PHP Frameworks

The XLab threat detection system uncovered an advanced PHP trojan named Glutton, which has been active for over a year without detection. Glutton targets both legitimate businesses and cybercriminal operations, infiltrating popular PHP frameworks like ThinkPHP and Laravel. It employs modular compon…

Published: December 11, 2024

Downloadable IOCs: 5

Intensifies Attacks On Russia With PhantomCore

The Head Mare hacktivist group has escalated its campaign against Russian targets using the PhantomCore backdoor. The group employs deceptive ZIP archives containing malicious LNK files and executables disguised as archive files to deploy PhantomCore. This C++-compiled backdoor, which replaces earl…

Published: December 11, 2024

Linked vulnerabilities : CVE-2023-38831

Downloadable IOCs: 31

MOONSHINE Exploit Kit and DarkNimbus Backdoor Enabling Earth Minotaur's Multi-Platform Attacks

Earth Minotaur, a threat actor targeting Tibetan and Uyghur communities, utilizes the MOONSHINE exploit kit to compromise Android devices and install the DarkNimbus backdoor. The exploit kit targets vulnerabilities in instant messaging apps, particularly WeChat, and has been updated with new exploi…

Published: December 5, 2024

Downloadable IOCs: 0

Guess Who’s Back - The Return of ANEL in the Recent Earth Kasha Spear-phishing Campaign in 2024

A spear-phishing campaign targeting Japan since June 2024 has been identified, featuring the reemergence of the ANEL backdoor, previously used by APT10 until 2018. The campaign, attributed to Earth Kasha, targets individuals in political organizations, research institutions, and international relat…

Published: November 27, 2024

Downloadable IOCs: 6

Unveiling WolfsBane: Linux counterpart to Gelsevirine

ESET researchers have discovered previously unknown Linux backdoors attributed to the China-aligned Gelsemium APT group. The main backdoor, named WolfsBane, is the Linux equivalent of Gelsemium's Gelsevirine backdoor for Windows. Another backdoor, FireWood, is connected to the group's Project Wood …

Published: November 22, 2024

Downloadable IOCs: 41

Spot the Difference: New LODEINFO Campaign And The Correlation Analysis With The APT10 Umbrella

Earth Kasha, a threat group targeting Japan since 2019, has launched a new campaign with significant updates to their tactics and arsenals. The group has expanded its targets to include Taiwan and India, focusing on advanced technology organizations and government agencies. They now exploit public-…

Published: November 19, 2024

Linked vulnerabilities : CVE-2023-3519, CVE-2023-27997, CVE-2023-45727, CVE-2023-28461, CVE-2013-3900, CVE-2023-3467, CVE-2023-3466

Downloadable IOCs: 7

Malware Spotlight: A Deep-Dive Analysis of WezRat

Check Point Research provides a comprehensive analysis of WezRat, a custom modular infostealer attributed to the Iranian cyber group Emennet Pasargad. The malware has been active for over a year, targeting organizations in multiple countries. WezRat's capabilities include executing commands, taking…

Published: November 14, 2024

Downloadable IOCs: 0

PHP Reinfector and Backdoor Malware Target WordPress Sites

A sophisticated PHP reinfector and backdoor malware is targeting WordPress websites, infecting plugin files and database tables. The malware reinfects active plugins, manipulates wp_options and wp_posts tables, and creates malicious admin users. It utilizes WordPress's cron system to maintain contr…

database manipulation

Published: November 14, 2024

Downloadable IOCs: 0

WINELOADER Analysis

APT29, also known as Cozy Bear, has targeted European diplomats using a sophisticated multi-stage attack chain involving a new modular backdoor called WINELOADER. The attack begins with a fake PDF invitation to a wine-tasting event, which leads to the download of a malicious HTA file. This file the…

Published: November 7, 2024

Downloadable IOCs: 0

Midnight Blizzard conducts large-scale spear-phishing campaign using RDP files

On October 22, 2024, Microsoft identified a spear-phishing campaign in which Midnight Blizzard sent phishing emails to thousands of users in over 100 organizations. The emails were highly targeted, using social engineering lures relating to Microsoft, Amazon Web Services (AWS), and the concept of Z…

Published: October 30, 2024

Downloadable IOCs: 281

CoreWarrior Spreader Malware Surge

This report delves into an analysis of CoreWarrior, a persistent trojan designed for rapid propagation. It creates multiple copies of itself, attempts connections to various IP addresses, opens backdoor access, and hooks Windows UI elements for monitoring purposes. The malware employs techniques li…

Published: October 15, 2024

Downloadable IOCs: 3

Rhysida Ransomware: Multi-Tiered Infrastructure and Early Detection Analysis

Insikt Group unveiled Rhysida's complex infrastructure, comprising typo-squatted domains for SEO poisoning, payload servers, CleanUpLoader C2 infrastructure, and higher-tier components including an admin panel and Zabbix monitoring server. This multi-tiered setup enables early victim identification…

Published: October 10, 2024

Downloadable IOCs: 106

MDR in Action: Preventing The More_eggs Backdoor From Hatching

A sophisticated spear-phishing attack led to a more_eggs backdoor infection at a company. The attack began with an email to a senior executive, followed by a recruitment officer downloading a fake resume. The malicious file, disguised as a resume, contained obfuscated commands that executed when op…

Published: October 1, 2024

Downloadable IOCs: 10

Storm-0501: Ransomware attacks expanding to hybrid cloud environments

Microsoft has observed Storm-0501, a financially motivated cybercriminal group, conducting multi-staged attacks targeting hybrid cloud environments. The group compromises on-premises networks, performs lateral movement to cloud environments, exfiltrates data, steals credentials, creates persistent …

Published: September 30, 2024

Linked vulnerabilities : CVE-2023-4966, CVE-2023-38203, CVE-2023-29300, CVE-2022-47966

Downloadable IOCs: 14

Analyzing the Newest Turla Backdoor

The Russian APT group Turla has launched a new campaign using shortcut files to infect systems with a fileless backdoor. The malware employs evasion techniques such as disabling ETW and AMSI, and unhooking. The attack begins with a shortcut file mimicking a PDF, which creates a file executed using …

backdoor

apt

2024-09-27

Published: September 27, 2024

Downloadable IOCs: 5

An Offer You Can Refuse: Backdoor Deployment Using Trojanized PDF Reader

UNC2970, a suspected North Korean cyber espionage group, targeted critical infrastructure sectors using job-themed phishing lures. The group employed a trojanized version of SumatraPDF to deliver the MISTPEN backdoor via the BURNBOOK launcher. The infection chain involved a password-protected ZIP a…

Published: September 18, 2024

Downloadable IOCs: 14

Observes Targeted Attacks Amid FBI Warnings

The report details targeted attacks observed by Jamf Threat Labs that align with FBI warnings about the Democratic People's Republic of Korea (DPRK) targeting individuals in the crypto industry through social engineering tactics for malware delivery. It outlines attack scenarios involving malicious…

Published: September 17, 2024

Downloadable IOCs: 8

New macOS malware gives attackers backdoor access to Macs

A new remote access Trojan (RAT) targeting macOS systems, dubbed HZ RAT, grants remote attackers complete control over infected Macs. The malware collects sensitive data, such as installed apps, user information from WeChat and DingTalk, and Google Password Manager credentials. It's suspected of sp…

Published: September 16, 2024

Downloadable IOCs: 25

Hadooken Malware Targets Weblogic Applications

Aqua Nautilus researchers identified a Linux malware, named Hadooken, targeting Oracle WebLogic servers. Upon gaining initial access through an exploited weak password, Hadooken deploys a cryptominer and the Tsunami malware. The report details the attack flow, techniques employed by the threat acto…

Published: September 13, 2024

Downloadable IOCs: 4

Targeted Iranian Attacks Against Iraqi Government Infrastructure

Check Point Research uncovered a new malware campaign targeting Iraqi government entities, employing custom tools named Veaty and Spearal. The attack utilizes various techniques including passive IIS backdoors, DNS tunneling, and C2 communication via compromised email accounts. The malware shows co…

Published: September 12, 2024

Downloadable IOCs: 16

Loki: a new private agent for the popular Mythic framework

Kaspersky researchers discovered a previously unknown Loki backdoor, utilized in a series of targeted attacks. Analysis revealed that Loki is a private version of an agent compatible with the open-source Mythic framework. The malware employs techniques like memory encryption, indirect system API ca…

Published: September 9, 2024

Downloadable IOCs: 7

Advanced Persistent Threat Targeting Vietnamese Human Rights Defenders

A long-term intrusion targeting a Vietnamese human rights non-profit organization has been discovered, likely spanning at least four years. The attack shows significant overlaps with techniques used by APT32/OceanLotus, a threat actor known for targeting Vietnamese activists. The intrusion involved…

Published: September 3, 2024

Downloadable IOCs: 46

Peach Sandstorm deploys new custom Tickler malware in long-running intelligence gathering operations

Between April and July 2024, Iranian state-sponsored threat actor Peach Sandstorm deployed a new custom multi-stage backdoor called Tickler. The malware targeted organizations in the satellite, communications equipment, oil and gas, and government sectors in the United States and UAE. Peach Sandsto…

linkedin intelligence gathering

tickler malware

iranian threat actor

Published: August 30, 2024

Downloadable IOCs: 9

HZ Rat backdoor for macOS harvests data from WeChat and DingTalk

A version of the HZ Rat backdoor targeting users of China’s WeChat and DingTalk was uploaded to VirusTotal in July 2023 and was not detected by any vendor, research by Kaspersky suggests.

Published: August 27, 2024

Downloadable IOCs: 10

A Dive into Latest Campaign

Earth Baku, an advanced persistent threat actor, has broadened its operations from the Indo-Pacific region to Europe, the Middle East, and Africa, targeting countries like Italy, Germany, UAE, and Qatar. The group leverages public-facing applications like IIS servers as entry points, deploying soph…

Published: August 9, 2024

Downloadable IOCs: 30

Hackers Leveraging OneDrive Or Google Drive To Hide Malicious Traffic

Cyber threat actors, including nation-state groups, are utilizing legitimate cloud services like Microsoft OneDrive and Google Drive for covert operations. These services evade detection by masquerading as trusted entities, enabling data exfiltration and tool deployment. A new Go-based backdoor, Go…

Published: August 7, 2024

Downloadable IOCs: 20

Fighting Ursa Luring Targets With Car for Sale

This analysis examines a campaign attributed to the Russian threat actor Fighting Ursa, also known as APT28, Fancy Bear, and Sofacy. The group utilized a phishing lure disguised as an advertisement for a car sale to distribute the HeadLace backdoor malware, likely targeting diplomats. The lure expl…

Published: August 5, 2024

Linked vulnerabilities : CVE-2024-3400

Downloadable IOCs: 6

BITS and Bytes: Analyzing BITSLOTH, a newly identified backdoor

Elastic Security Labs uncovered a new Windows backdoor called BITSLOTH that utilizes the Background Intelligent Transfer Service (BITS) for command-and-control communication. This malware, discovered during an intrusion into a South American government's Foreign Ministry, possesses capabilities for…

Published: August 2, 2024

Downloadable IOCs: 8

Patch or Peril: A Veeam vulnerability incident

While the vulnerability CVE-2023-27532 was made public in March 2023 and subsequently patched by Veeam for versions 12/11a and later for Veeam Backup & Replication software, Group-IB’s Digital Forensics and Incident Response (DFIR) team recently observed a notable incident related to this vulnerabi…

Published: July 12, 2024

Downloadable IOCs: 2

MoonWalk

This blog post examines MoonWalk, a new backdoor employed by APT41, a China-based threat actor known for campaigns in Southeast Asia. MoonWalk utilizes numerous evasion techniques, including DLL hollowing, call stack spoofing, and the abuse of Windows Fibers to evade security solutions. It also lev…

Published: July 12, 2024

Downloadable IOCs: 3

Turla: A Master of Deception

This report details a recent campaign by the Turla threat group involving malicious LNK files that deliver a fileless backdoor. The attack leverages compromised websites, PowerShell scripts, and MSBuild to deploy the payload, which employs various evasion techniques like disabling security features…

Published: July 8, 2024

Downloadable IOCs: 10

Attack Case against HFS (HTTP File Server) Server (Suspected CVE-2024-23692)

A remote code execution vulnerability (CVE-2024-23692) in the HFS (HTTP File Server) program has allowed attackers to execute malicious commands on vulnerable systems. Various attack cases exploiting this vulnerability have been observed, leading to the installation of malware such as coin miners, …

Published: July 3, 2024

Linked vulnerabilities : CVE-2024-23692 (CVSS 9.8)

Downloadable IOCs: 14

Appearance of Kimsuky group's new backdoor (HappyDoor)

Asec Ahnlab analyzes a new backdoor malware called HappyDoor used by the North Korean hacking group Kimsuky in recent email attacks. The malware has evolved over time and contains capabilities for information stealing and remote access. It communicates with command and control servers using encrypt…

Published: July 1, 2024

Downloadable IOCs: 16

Malicious npm package targets AWS users

ReversingLabs' researchers discovered a malicious package named legacyreact-aws-s3-typescript on the npm repository. It mimicked a popular legitimate package, react-aws-s3-typescript, designed to facilitate file uploads to Amazon S3 Buckets. Initially, the package appeared benign, but a later versi…

Published: June 27, 2024

Downloadable IOCs: 3

North Korean based backdoor packs a punch

This report analyzes a new threat campaign discovered in late May, featuring multiple layers and ultimately delivering a previously undocumented backdoor. The campaign specifically targets Aerospace and Defense companies, sectors of particular interest to North Korean threat groups. The backdoors a…

Published: June 21, 2024

Downloadable IOCs: 20

Sustained Campaign Using Chinese Espionage Tools Targets Telcos

Attackers using tools associated with Chinese espionage groups have breached multiple telecom operators in a single Asian country in a long-running espionage campaign. The attackers placed backdoors on the networks of targeted companies and also attempted to steal credentials.

Published: June 20, 2024

Downloadable IOCs: 47

Behind the Great Wall Void Arachne Targets Chinese-Speaking Users With the Winos 4.0 CC Framework

Trend Micro recently discovered a threat actor group dubbed Void Arachne targeting Chinese-speaking users with malicious Windows Installer (MSI) files containing legitimate software bundled with malicious Winos payloads. The campaign promotes compromised MSI files embedded with nudifiers, deepfake …

Published: June 19, 2024

Linked vulnerabilities : CVE-2024-21412

Downloadable IOCs: 46

SolarMarker Impersonates Job Employment Website

On April 2024, Cyber Analysts responded to a SolarMarker infection event. The infection occurred through a drive-by download when a user, while searching for workplace team-building ideas on Bing, was directed to a malicious site impersonating the global employment website, Indeed.

Published: June 18, 2024

Downloadable IOCs: 6

Dipping into Danger: The WARMCOOKIE backdoor

Elastic Security Labs identified a new wave of email campaigns targeting environments by deploying a novel backdoor dubbed WARMCOOKIE, which communicates via HTTP cookie parameters. The malware is an initial tool used to scout victim networks and deploy additional payloads, with hard-coded command …

Published: June 12, 2024

Downloadable IOCs: 6

IcedID Brings ScreenConnect and CSharp Streamer to ALPHV Ransomware Deployment

This report details an intrusion that commenced with a spam campaign distributing a forked IcedID loader. After gaining initial access, the threat actor deployed ScreenConnect and established Cobalt Strike beacons, enabling remote command execution. They also utilized CSharp Streamer, a capable RAT…

Published: June 10, 2024

Downloadable IOCs: 33

Fake Advanced IP Scanner Installer Delivers Dangerous Backdoor

Security researchers discovered a malicious version of the Advanced IP Scanner installer, which contained a backdoored DLL module. The compromised installer was distributed through a typo-squatted domain and appeared in search results for the legitimate software. When executed, the installer inject…

Published: June 6, 2024

Downloadable IOCs: 11

Wineloader - Analysis of the Infection Chain

The analysis examines the Wineloader backdoor, a modular malware attributed to the APT29 threat group, which allows further tools or modules to be downloaded through an encrypted command and control channel. It starts with a phishing email luring targets with a wine tasting event invitation. Execut…

Published: June 6, 2024

Downloadable IOCs: 9

CVE-2024-4978: Backdoored Justice AV Solutions Viewer Software Used in Apparent Supply Chain Attack

Rapid7 discovered that version 8.3.7 of the JAVS Viewer software from Justice AV Solutions contained a backdoor installer allowing attackers to gain remote control over affected systems. The malicious installer included a binary named fffmpeg.exe which executed obfuscated PowerShell scripts and fac…

credential harvesting

Published: May 24, 2024

Linked vulnerabilities : CVE-2024-4978 (CVSS 8.4)

Downloadable IOCs: 10

Springtail: New Linux Backdoor Added to Toolkit

Symantec's Threat Hunter Team has uncovered a new Linux backdoor, named Gomir, developed by the North Korean Springtail espionage group, which is linked to malware employed in a recent campaign targeting organizations in South Korea. The backdoor shares extensive code similarities with the Windows-…

Published: May 16, 2024

Downloadable IOCs: 20

To the Moon and back(doors): Lunar landing in diplomatic missions

ESET researchers discovered two previously unknown backdoors – LunarWeb and LunarMail – compromising a European ministry of foreign affairs and its diplomatic missions abroad. LunarWeb, deployed on servers, utilizes HTTP(S) for command and control communications, mimicking legitimate requests to av…

Published: May 16, 2024

Downloadable IOCs: 12

LNK File Disguised as Certificate Distributing RokRAT Malware

This analysis delves into the continuous distribution of malicious shortcut files (*.LNK) targeting South Korean users, particularly those related to North Korea. These LNK files contain legitimate documents, script code, and encoded malware data. When executed, they create and run a document file …

Published: May 7, 2024

Downloadable IOCs: 4

Playing Possum: What's the Backdoor Up To?

This report analyzes the Wpeeper backdoor targeting Android systems. Wpeeper utilizes compromised WordPress sites as relay C2 servers to hide its true C2. It uses HTTPS requests with Session fields to differentiate command types. Commands are encrypted with AES and signed to prevent takeover. Wpeep…

Published: May 3, 2024

Downloadable IOCs: 98

Tag: backdoor

Attack reports

OptinMonster supply chain attack hits 1.2 million sites

Operation FlutterBridge: macOS Malvertising Campaign Spreads New FlutterShell Backdoor

macOS Stealer Spoofs Apple, Google, and Microsoft in a Single Attack Chain

Same packet, different magic: Hits India's banking sector and Korea geopolitics

Phantom Footprints: Tracking GhostSocks Malware

Converging Interests: Analysis of Threat Clusters Targeting a Southeast Asian Government

EtherRAT & SYS_INFO Module: C2 on Ethereum (EtherHiding), Target Selection, CDN-Like Beacons

Libyan Oil Refinery Among Targets in Long-running Likely Espionage Campaign

New backdoor targeting Ukrainian entities with possible links to Laundry Bear

Middle East Conflict Fuels Opportunistic Cyber Attacks

Iranian APT on Networks of U.S. Bank, Airport, Software Company

New Dohdoor malware campaign targets education and health care

Malicious Go 'crypto' Module Steals Passwords and Deploys Rekoobe Backdoor

APT37 Adds New Capabilities for Air-Gapped Networks

Disrupting the GRIDTIDE Global Cyber Espionage Campaign

Four Malicious NuGet Packages Target ASP.NET Developers With JIT Hooking and Credential Exfiltration

Cloud Atlas: Analysis of Phishing Campaign and VBShower Backdoor

Zero-day in Dell RecoverPoint for Virtual Machines (CVE-2026-22769)

The tablet conqueror and the links between major Android botnets

A security alert regarding APT-C-28 (ScarCruft) using MiradorShell to launch a cyberattack.

The Chrysalis Backdoor: A Deep Dive into Lotus Blossom's toolkit

eScan confirms update server breached to push malicious update

APT Attacks Target Indian Government Using SHEETCREEP, FIREPOWER, and MAILCREEP

CoolClient backdoor updated, new data stealing tools used

ShadowRelay: New Modular Backdoor in the Public Sector

KONNI Adopts AI to Generate PowerShell Backdoors

Threat Actors Expand Abuse of Microsoft Visual Studio Code

Hunting Lazarus: Inside the Contagious Interview C2 Infrastructure

Targeted espionage leveraging geopolitical themes

CNCERT: Risk Warning Regarding the "Black Cat" Gang's Use of Search Engines to Spread Counterfeit Notepad++ Download Remote Control Backdoors

LongNosedGoblin tries to sniff out governmental affairs in Southeast Asia and Japan

DeedRAT: Unpacking a Modern Backdoor's Playbook

Webrat, disguised as exploits, is spreading via GitHub repositories

UAT-9686 actively targets Cisco Secure Email Gateway and Secure Email and Web Manager

UDPGangster Campaigns Target Multiple Countries

Technical Analysis of Matanbuchus 3.0

Shai-Hulud V2 Poses Risk to NPM Supply Chain

Unraveling Water Saci's New Multi-Format, AI-Enhanced Attacks Propagated via WhatsApp

Snakes by the riverbank

Shai-Hulud 2.0: Aggressive & Automated, One Of Fastest Spreading NPM Supply Chain Attacks Ever Observed

A Closer Look at Outlook Macros and More

Lazarus Group targets Aerospace and Defense with new Comebacker variant

DPRK's Playbook: HttpTroy and New BLINDINGCAN Variant

Oracle E-Business Suite CVE-2025-61882 - Malware Analysis

WARMCOOKIE One Year Later: New Features and Fresh Insights

Gamaredon X Turla collaboration

Updates Arsenal with BAITSWITCH and SIMPLEFIX

NodeJS backdoors delivering proxyware and monetization schemes

Hidden WordPress Backdoors Creating Admin Accounts

Infected Steam game "BlockBlasters" downloads crypto stealer malware

Updated Toneshell backdoor and novel SnakeDisk USB worm dropped

EggStreme Malware: Unpacking a New APT Framework Targeting a Philippine Military Company

Learn about ChillyHell, a modular Mac backdoor

GhostRedirector poisons Windows servers: Backdoors with a side of Potatoes

Analyzing NotDoor: Inside APT28's Expanding Arsenal

AI Waifu RAT: A Ring3 malware-like RAT based on LLM manipulation is circulating in the wild

Backdoor in "AppSuite PDF Editor": A Detailed Technical Analysis

The Covert Dual-Mode Backdoor Threat

Android backdoor spies on Russian business employees

A Cereal Offender: Analyzing the CORNFLAKE.V3 Backdoor

Dissecting PipeMagic: Inside the architecture of a modular backdoor framework

Threat Bulletin: Fire in the Woods – A New Variant of FireWood

A New Threat Actor Targeting Geopolitical Hotbeds

ToolShell: An all-you-can-eat buffet for threat actors

Update WinRAR tools now: RomCom and others exploiting zero-day vulnerability

Atomic macOS Stealer includes a backdoor for persistent access

Project AK47: Uncovering a Link to the SharePoint Vulnerability Attacks

LNK Trojan delivers REMCOS

DeedRAT Backdoor Enhanced with Advanced Capabilities

Ongoing SonicWall Secure Mobile Access (SMA) Exploitation Campaign using the OVERSTEP Backdoor

Evolution of macOS Odyssey Stealer: New Techniques & Signed Malware

GhostContainer backdoor for Exchange servers

Rainbow Hyena strikes again: new backdoor and shift in tactics

Analysis of APT-C-55 (Kimsuky) Organization's HappyDoor Backdoor Attack Based on VMP Strong Shell

macOS.ZuRu Resurfaces | Modified Khepri C2 Hides Inside Doctored Termius App

Hacker Exploit Social Security Statement Theme to Target Over 2,000 Victims with Malware

Threat actor Banana Squad exploits GitHub repos in new campaign

Resurgence of the Prometei Botnet