Tag: persistence

A sophisticated phishing operation targeting European automotive, chemical, and industrial manufacturing companies has been uncovered. The campaign, which peaked in June 2024, used HubSpot Free Form Builder and Docusign-enabled PDFs to harvest account credentials and infiltrate Microsoft Azure clou…

A new malware campaign attributed to the Romanian-speaking Diicot threat group has been discovered targeting Linux systems. The campaign shows significant advancements compared to previous iterations, including modified UPX headers with corrupted checksums, advanced payload staging, and environment…

This report details a malicious campaign where the threat actor gained initial access through a resume lure as part of a TA4557/FIN6 operation. The actor employed techniques like abusing legitimate binaries, establishing Cobalt Strike and Pyramid C2, exploiting CVE-2023-27532 for lateral movement, …

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 …

The DONOT APT group has launched a campaign targeting Pakistan's manufacturing industry supporting maritime and defense sectors. The attack uses a malicious LNK file disguised as an RTF, which executes PowerShell commands to deliver a lure document and stager malware. The malware establishes persis…

HawkEye, also known as PredatorPain, is a long-lived keylogger malware that has evolved to include stealer capabilities. Originating before 2010, it gained popularity in 2013 through spearphishing campaigns. The malware is typically delivered via phishing emails or compromised websites, and utilize…

A sophisticated multi-stage PowerShell campaign has been identified, utilizing an LNK file to initiate a sequence of obfuscated scripts. The attack maintains persistence and stealth by connecting with a command-and-control server. It employs Chisel, a fast TCP/UDP tunneling tool, and a Netskope pro…

SentinelLabs researchers identified a North Korea-linked threat actor targeting crypto businesses with new macOS malware as part of a campaign called 'Hidden Risk'. The attackers, linked to BlueNoroff, used fake cryptocurrency news emails and a malicious app disguised as a PDF to deliver multi-stag…

A new keylogger, attributed to the North Korean group Andariel (APT45), has been linked to targeted attacks against U.S. organizations. The malware captures keystrokes and mouse activity, storing data in an encrypted archive. It employs anti-analysis techniques like code obfuscation through junk co…

A sophisticated malvertising campaign is distributing the SYS01 infostealer malware through Meta's advertising platform. The attackers impersonate trusted brands and popular software, targeting primarily senior male demographics. The malware, designed to steal personal data and credentials, is dist…

Cyble Research and Intelligence Labs uncovered an ongoing cyberattack campaign utilizing malicious LNK files to gain unauthorized Remote Desktop access on compromised systems. The sophisticated multi-stage attack chain employs PowerShell and BAT scripts to evade detection, create administrative acc…

ValleyRAT is a remote access Trojan targeting Chinese-speaking users through phishing campaigns. It employs multi-stage, multi-component tactics to evade detection and maintain persistence. The malware uses various techniques including process injection, registry manipulation, and UAC bypass. It at…

This analysis examines two cybersecurity incidents: a web shell attack and a VPN compromise. The web shell attack involved uploading malicious files to a server, executing commands, creating a local admin account, and attempting to establish persistence. The VPN compromise led to lateral movement, …

This analysis examines the Remote Access Trojan (RAT) DarkComet, detailing its capabilities, distribution methods, and technical operations. The malware alters file attributes, establishes communication with malicious domains, modifies process privileges, and gathers system information. It employs …

An unknown threat actor is exploiting exposed Docker Remote API servers to deploy the perfctl malware. The attack sequence involves probing the server, creating a Docker container with specific settings, and executing a Base64 encoded payload. The payload escapes the container, creates a bash scrip…

A security flaw in Windows 7 and Server 2008 R2 allows kernel shellcode to be hidden in the registry and executed during boot, despite patches. This vulnerability was exploited in a 2018 targeted attack. The SAS CTF challenge involved analyzing this technique, which uses buffer overflows in DirectX…

The IMEEX framework is a newly discovered, custom-built malware targeting Windows systems. Delivered as a 64-bit DLL, it offers extensive control over compromised machines, featuring execution of additional modules, file manipulation, process management, registry modification, and remote command ex…

This report details the tactics and techniques employed by the LemonDuck cryptomining malware, which exploits the SMB service by leveraging the EternalBlue vulnerability (CVE-2017-0144). After gaining initial access through brute-force attacks, the malware creates malicious files, disables security…

This report delves into the technical aspects of the NOOPDOOR and NOOPLDR malwares employed by the APT10 threat actor in the Cuckoo Spear campaign. The analysis reveals how these tools operate and the potential risks they pose, helping cybersecurity professionals better understand and defend agains…

A global malware campaign targeting mainly Russian-speaking users has been distributing cryptocurrency mining malware through fake software download sites, Telegram channels, and YouTube videos. The multi-stage infection chain uses unusual techniques for persistence and evasion, including hiding ma…

A new malware called Vilsa Stealer has emerged on GitHub, notable for its speed and efficiency in extracting sensitive data. This sophisticated tool targets browser credentials, tokens, and various application data. It supports major browsers and over 40 crypto wallets, using Python as its programm…

A sophisticated Linux malware named 'perfctl' has been actively targeting millions of servers worldwide for the past 3-4 years. It exploits over 20,000 types of misconfigurations to compromise Linux systems. The malware employs advanced evasion techniques, including rootkits, process masquerading, …

Key Group, also known as keygroup777, is a financially motivated ransomware group primarily targeting Russian users. The group has been active since 2022, using various leaked ransomware builders and wipers, including Xorist, Chaos, Annabelle, Slam, RuRansom, UX-Cryptor, Hakuna Matata, and Judge/No…

Key Group is a financially motivated ransomware group primarily targeting Russian users. They use various leaked ransomware builders including Chaos, Xorist, Annabelle, Slam, RuRansom, UX-Cryptor, Hakuna Matata, and Judge/NoCry. The group's activity has been tracked since April 2022, with their tac…

Recent weeks have seen a resurgence of North Korean-aligned groups targeting developers through npm packages. The campaign, which began on August 12, 2024, involves multiple groups using various publication patterns and attack types. The malicious packages contain obfuscated JavaScript that downloa…

This comprehensive report analyzes Gomorrah Stealer, a sophisticated malware designed to exfiltrate sensitive information from compromised systems. It operates within a malware-as-a-service framework and targets data from web browsers, cryptocurrency wallets, VPNs, and configuration files. The stea…

The Scattered Spider cybercriminal group is targeting cloud infrastructures in the insurance and financial sectors using advanced techniques. They exploit leaked authentication tokens, conduct phishing and smishing campaigns, and leverage SIM swapping to bypass multi-factor authentication. The grou…

Identified as a sophisticated dropper binary designed to deploy an information stealer dubbed BLX Stealer or XLABB Stealer, this malware has been actively promoted on Telegram and Discord platforms. It targets credentials, browser data, cryptocurrency wallets, and other sensitive personal informati…

Trend Micros discusses analysis of Earth Preta’s enhancements in their attacks by introducing new tools, malware variants and strategies to their worm-based attacks and their time-sensitive spear-phishing campaign.

Zharkbot is a C++ downloader with extensive anti-analysis and anti-sandbox features. It uses in-line string encryption and API calls, making static and emulation analysis challenging. The malware performs sandbox detection by checking for specific usernames and hypervisors. It installs itself in th…

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…

The analysis delves into the Mekotio Trojan, a sophisticated malware that employs a PowerShell dropper to execute its payload. The dropper employs obfuscation techniques, such as custom XOR decryption, to conceal its operations. It collects system information, communicates with a command-and-contro…

FortiGuard Labs recently caught a phishing campaign delivering a new variant of Snake Keylogger, a keylogger malware that can steal sensitive data like saved credentials, keystrokes, and screenshots. The analysis examines the phishing email, malicious Excel document, and techniques used by the malw…

Seqrite Labs APT-Team discovered a sophisticated malware campaign targeting government and military officials in the Czech Republic. The campaign leveraged NATO-themed decoy documents to lure victims and employed a multistage attack chain involving a malicious batch script, a Rust-based loader, and…

Stroz Friedberg discovered sedexp, a stealthy Linux malware that utilizes udev rules to achieve persistence and evade detection. It provides reverse shell capabilities and advanced concealment tactics. Employed by a financially motivated threat actor, sedexp hides credit card scraping code, indicat…

The report provides an in-depth analysis of the Bitter APT Group, a threat actor primarily focusing on cyber espionage activities in South Asia. It details the group's tactics, techniques, and procedures, including their ability to bypass security technologies by leveraging obscure file formats and…

An analysis reveals the distribution of malware through an MSI package, specifically SectopRat and Redline stealer. The malware employs techniques like executing malicious scripts, disabling security measures, and establishing persistence through scheduled tasks. It communicates with command-and-co…

This comprehensive technical analysis delves into the intricate workings of an advanced and localized malware campaign employing the RHADAMANTHYS stealer. Dissecting the infection chain, anti-analysis techniques, data theft capabilities, and Command & Control infrastructure, this detailed report sh…

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…

This analysis examines a recent malware campaign that utilizes the NetSupport RAT, a legitimate remote administration tool, for persistent infections. The threat actors behind this campaign employ obfuscation techniques and updates to evade detection. However, by identifying weaknesses in the obfus…

This advisory cautions about the distribution of malware masquerading as crack programs for software. The malicious actors aim to prevent the installation of V3 Lite, an anti-malware solution, by terminating its installation process. This tactic allows them to maintain persistence and continue upda…

This report provides an in-depth analysis of a newly discovered information stealer named Kematian-Stealer, actively developed on GitHub and distributed as open-source software. The malware employs various techniques to collect sensitive data from compromised systems, evade detection, and maintain …

This analysis covers the distribution of AsyncRAT malware disguised as an ebook. The compressed file contains a malicious LNK and PowerShell scripts that ultimately execute AsyncRAT. The malware employs various techniques, such as obfuscation, task scheduling, and anti-VM and anti-AV capabilities, …

An analysis of a newly discovered botnet named Zergeca, implemented in Go language, with capabilities for DDoS attacks, proxying, scanning, self-upgrading, persistence, file transfer, reverse shell, and collecting sensitive device information. The report delves into the botnet's unique features, in…

Rapid7 has observed a recent malvertising campaign that lures users into downloading malicious installers for popular software such as Google Chrome and Microsoft Teams.

This intelligence report describes a malicious operation where the Remcos Remote Access Trojan (RAT) is being disseminated through phishing emails containing an attachment exploiting the Unix-to-Unix Encoding (UUE) technique. The encoded file loads an obfuscated VBScript that fetches additional mal…

The report describes a recent campaign targeting Apache RocketMQ platforms, where attackers exploited a known vulnerability (CVE-2023-33246) to gain remote code execution on the systems. They then downloaded and executed the Muhstik malware, which provides persistence, evades detection, performs la…

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…

Vidar Stealer is a potent malware written in C++, capable of stealing a wide range of data from the compromised system. Vidar Stealer targets user’s personal data, web-browser data, cryptocurrency wallets, financial data, sensitive files within user directories, communication applications, process …

This report details a sophisticated cyber intrusion targeting MITRE's research network (NERVE) through the exploitation of Ivanti Connect Secure zero-day vulnerabilities. The threat actor, suspected to be UNC5221, initiated the attack by gaining unauthorized access and subsequently deploying variou…

The report details an ongoing malware campaign targeting South Korean users, which disguises malicious payloads as cracked versions of Microsoft Office and other popular software. The attackers are distributing a variety of malware, including downloaders, coin miners, remote access tools (RATs), pr…

This analysis discusses the emergence of a new macOS malware family called 'Cuckoo Stealer', which acts as an infostealer and spyware. It describes Cuckoo Stealer's main features, logic, and provides indicators of compromise to assist threat hunters and defenders. The malware employs techniques lik…

This comprehensive analysis provides a thorough examination of the REMCOS Remote Access Trojan (RAT), a prominent malware threat that gained significant prevalence in 2024. The analysis delves into the malware's configuration structure, command and control capabilities, persistence mechanisms, and …

This report details the operation of the zEus stealer malware, which is distributed through a crafted Minecraft source pack. The malware collects sensitive information from victims' systems, including login credentials, browser data, and cryptocurrency wallets. It employs anti-analysis techniques a…

This in-depth analysis examines Fletchen stealer, an advanced information-stealing malware featuring potent anti-analysis capabilities. It explores the malware's tactics for data harvesting from compromised systems, exfiltration methods, and measures to evade detection. The report emphasizes the dy…