SecuriTricks - malvertising

Cooking up trouble: How TamperedChef uses signed apps to deliver stealthy payloads

The TamperedChef campaign is a global malvertising and SEO operation that distributes seemingly legitimate software with valid code signing to trick users into executing malicious installers. These fake applications mimic common software and establish persistence through scheduled tasks, delivering…

social engineering

malvertising

code-signing certificates

signed applications

Published: November 26, 2025

Downloadable IOCs: 0

Russian RomCom Utilizing SocGholish to Deliver Mythic Agent to U.S. Companies Supporting Ukraine

Arctic Wolf Labs identified a U.S.-based company targeted by the Russian-aligned threat group RomCom via SocGholish, operated by TA569. This marks the first observed instance of a RomCom payload being distributed through SocGholish. The attack chain involved compromising legitimate websites, using …

Published: November 25, 2025

Downloadable IOCs: 0

Certified OysterLoader: Tracking Rhysida ransomware gang activity via code-signing certificates

The Rhysida ransomware gang, formerly known as Vice Society, is conducting an ongoing malicious ad campaign to deliver OysterLoader malware. This initial access tool establishes a foothold on devices for dropping a persistent backdoor. The campaign uses Bing search engine advertisements to direct u…

microsoft trusted signing

oysterloader

Published: November 3, 2025

Downloadable IOCs: 271

Threat Actors Leverage SEO Poisoning and Malicious Ads to Distribute Backdoored Microsoft Teams Installers

A new campaign is distributing the Oyster (Broomstick) backdoor through trojanized Microsoft Teams installers. Threat actors are using SEO poisoning and malvertising to trick users into downloading fake installers from spoofed websites. The malicious installers deploy a persistent backdoor that ena…

Published: October 2, 2025

Downloadable IOCs: 15

Potentially Unwanted Applications (PUAs) weaponized for covert delivery

A malware distribution campaign leveraging digitally signed binaries, deceptive packaging, and browser hijackers has been uncovered. The campaign centers around two malicious applications, ImageLooker.exe and Calendaromatic.exe, delivered via self-extracting 7-Zip archives. These artifacts align wi…

trojanized-productivity-tools

code-signing-abuse

calendaromatic

browser-hijacker

Published: September 29, 2025

Linked vulnerabilities : CVE-2025-0411 (CVSS 7.0)

Downloadable IOCs: 6

GPUGate Malware: Malicious GitHub Desktop Implants Use Hardware-Specific Decryption, Abuse Google Ads to Target Western Europe

A sophisticated malware campaign dubbed 'GPUGate' has been uncovered, targeting Western European IT professionals through malicious Google Ads mimicking GitHub Desktop. The attack leverages GitHub's repository structure and a GPU-gated decryption mechanism to evade analysis. The malware, a 128 MB M…

Published: September 8, 2025

Linked vulnerabilities : CVE-2025-20265 (CVSS 10.0), CVE-2025-7775 (CVSS 9.2)

Downloadable IOCs: 42

Like PuTTY in Admin's Hands

The LevelBlue Managed Detection and Response team handled incidents related to a malvertising campaign distributing trojanized versions of the PuTTY terminal emulator. The malicious software, masquerading as legitimate PuTTY, was downloaded by privileged users and exhibited behaviors such as Kerber…

Published: August 27, 2025

Downloadable IOCs: 0

Think before you Click(Fix): Analyzing the ClickFix social engineering technique

The ClickFix social engineering technique has gained popularity among threat actors, targeting thousands of devices globally. It tricks users into executing malicious commands on their devices by exploiting their tendency to solve minor technical issues. The technique often impersonates legitimate …

atomic macos stealer (amos)

lampion

2025-08-21

windows run dialog

Published: August 21, 2025

Downloadable IOCs: 10

The Sting of Fake Kling: Facebook Malvertising Lures Victims to Fake AI Generation Website

A threat actor has orchestrated a sophisticated malvertising campaign impersonating Kling AI, a popular AI-powered image and video synthesis tool. The attackers use counterfeit Facebook pages and paid ads to drive traffic to a convincing fake website. Users are tricked into downloading malicious fi…

Published: May 21, 2025

Downloadable IOCs: 42

New Nitrogen Ransomware Targets Financial Firms in the US, UK and Canada

Nitrogen, a new ransomware strain identified in September 2024, has become a significant threat to organizations worldwide, particularly in the financial sector. It encrypts critical data and demands substantial payments for decryption, targeting industries such as finance, construction, manufactur…

Published: May 20, 2025

Downloadable IOCs: 2

Nitrogen Dropping Cobalt Strike – A Combination of 'Chemical Elements'

The Nitrogen ransomware group has expanded its operations from North America to Africa and Europe since September 2024. They utilize malvertising tactics, disguising malicious payloads as legitimate software like WinSCP. The group employs DLL sideloading for initial access, followed by Cobalt Strik…

Published: May 2, 2025

Downloadable IOCs: 2

The "free money" trap: How scammers exploit financial anxiety

This analysis explores how scammers capitalize on financial stress by promising 'free money' through fake subsidy programs, government grants, or relief cards. Common tactics include using urgency, exclusivity, and fabricated social proof to manipulate victims. Scammers employ various techniques su…

government impersonation

Published: April 18, 2025

Downloadable IOCs: 0

Thunderstruck! Malicious ads for RVTools lead to ThunderShell payload

A security incident involving malicious sponsored ads distributing backdoored administrative tools was detected. Users searching for RVTools were served a tampered version containing ThunderShell, a PowerShell-based remote access tool. The malicious ads, appearing in Google search results, led to a…

Published: April 3, 2025

Downloadable IOCs: 0

Malvertising campaign leads to info stealers hosted on GitHub

A large-scale malvertising campaign impacting nearly one million devices globally was detected in December 2024. The attack originated from illegal streaming websites with embedded malvertising redirectors, leading users through multiple redirections to malware hosted on GitHub and other platforms.…

Published: March 6, 2025

Downloadable IOCs: 3

Beneath the Surface: Detecting and Blocking Hidden Malicious Traffic Distribution Systems

This analysis explores the use of traffic distribution systems (TDS) by threat actors to redirect network traffic for illicit purposes like phishing and malvertising. TDS act as central hubs, obfuscating final destinations and hindering detection. The study found that malicious TDS exhibit distinct…

traffic distribution systems

Published: March 5, 2025

Downloadable IOCs: 0

Booking a Threat: Inside LummaStealer's Fake reCAPTCHA

A new malicious campaign targeting booking websites has been discovered, utilizing LummaStealer, an info-stealer operating under a Malware-as-a-Service model. The attack employs fake CAPTCHAs to trick users into executing malicious PowerShell commands. Initially targeting the Philippines, the campa…

indirect control flow

Published: March 4, 2025

Downloadable IOCs: 12

Lumma Stealer Malware Thrives as Unique Patterns Uncovered in the Infostealer's Domain Clusters

Recent research reveals Lumma Stealer command and control domain clusters share specific technical characteristics, enabling mapping of entire infrastructure clusters. The infostealer's logs are being shared for free on Leaky[.]pro, a new hacking forum, offering billions of stolen credential record…

Published: February 22, 2025

Downloadable IOCs: 0

The great Google Ads heist: criminals ransack advertiser accounts via fake Google ads

Cybercriminals are targeting Google Ads advertisers through phishing campaigns, impersonating Google Ads via fraudulent ads. The scheme involves stealing advertiser accounts by redirecting victims to fake login pages, with the goal of reselling these accounts on blackhat forums. The operation uses …

Published: January 20, 2025

Downloadable IOCs: 29

Fake Captcha Driving Infostealer Infections and a Glimpse to the Dark Side of Internet Advertising

A large-scale fake captcha campaign has been distributing Lumma info-stealer malware through malvertising techniques. The campaign, relying on a single ad network, delivers over 1 million daily ad impressions, causing thousands of daily victims to lose their accounts and money. The malicious activi…

Published: December 18, 2024

Downloadable IOCs: 50

Hello again, FakeBat: popular loader returns after months-long hiatus

FakeBat, a loader previously known as Eugenloader and PaykLoader, has resurfaced after a three-month absence. The malware was distributed through a malicious Google ad impersonating the productivity application Notion. The attack chain involves a tracking template, cloaking domain, and a decoy site…

Published: November 11, 2024

Downloadable IOCs: 19

InfoStealer Malware Attacking Meta Business Page To Steal Logins

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…

LUNAR SPIDER Enabling Ransomware Attacks on Financial Sector with Brute Ratel C4 and Latrodectus

LUNAR SPIDER, a Russian-speaking financially motivated threat group, has resumed operations following law enforcement disruptions. They've shifted from using IcedID to leveraging Latrodectus and Brute Ratel C4 malware, targeting financial services through SEO poisoning malvertising campaigns. The g…

infrastructure sharing

Published: October 31, 2024

Downloadable IOCs: 0

Malicious CAPTCHA delivers Lumma and Amadey Trojans

An adware campaign targets online users by presenting them with fake CAPTCHA or update prompts, tricking them into running malicious PowerShell commands that deploy credential-stealing malware like Lumma and Amadey. The attackers leverage ad networks to redirect victims to compromised sites hosting…

Published: October 29, 2024

Downloadable IOCs: 1

A Measure of Motive: How Attackers Weaponize Digital Analytics Tools

Threat actors are repurposing digital analytics and advertising tools to evade detection and enhance their malicious campaigns. The report explores how link shorteners, IP geolocation utilities, CAPTCHA systems, and advertising intelligence platforms are being weaponized. It provides insights into …

Published: September 30, 2024

Downloadable IOCs: 10

Atomic macOS Stealer leads sensitive data theft on macOS

The report discusses the Atomic macOS Stealer (AMOS), an infostealer malware targeting macOS systems. It is designed to steal sensitive information like passwords, cookies, cryptocurrency wallets, and other data from infected machines. The malware is distributed through malvertising, SEO poisoning,…

Published: September 9, 2024

Downloadable IOCs: 17

Detecting evolving threats: NetSupport RAT campaign

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…

Published: August 2, 2024

Downloadable IOCs: 3

'Evil Twin' Apps Spread for Multiple Fraud Schemes

HUMAN's Satori Threat Intelligence and Research team recently uncovered a massive ad fraud operation dubbed Konfety, involving threat actors operating 'evil twin' versions of 'decoy twin' apps available on major app marketplaces. The decoy twins on official stores behave normally, while the evil tw…

Published: July 17, 2024

Downloadable IOCs: 0

WorkersDevBackdoor and MadMxShell converge in malvertising campaigns

This report analyzes two recent malware distribution campaigns that leverage malvertising techniques. The campaigns deliver the WorkersDevBackdoor and MadMxShell backdoors, which have data exfiltration capabilities and can facilitate ransomware deployment. The malware's delivery infrastructure, inc…

Published: July 15, 2024

Downloadable IOCs: 51

Fake Microsoft Teams for Mac delivers Atomic Stealer

A malvertising campaign lures Mac users into downloading a counterfeit Microsoft Teams installer containing Atomic Stealer, a data-stealing malware. The campaign uses advanced filtering techniques, compromised ad accounts, and decoy pages to deliver unique payloads that bypass security measures. Up…

Published: July 12, 2024

Downloadable IOCs: 6

Exposing FakeBat loader: distribution methods and adversary infrastructure

During the first semester of 2024, FakeBat (aka EugenLoader, PaykLoader) was one of the most widespread loaders using the drive-by download technique. Researchers uncovered multiple FakeBat distribution campaigns leveraging malvertising, software impersonation, fake web browser updates, and social …

Published: July 2, 2024

Downloadable IOCs: 237

Polyfill supply chain attack hits 100K+ sites

A malicious Chinese entity acquired control over the popular Polyfill JS open-source project and has been injecting malware into over 100,000 websites that embed the polyfill.io content delivery network. The malware redirects mobile users to a fraudulent sports betting site hosted on a domain imper…

Published: June 27, 2024

Downloadable IOCs: 7

Threat actors ride the hype for newly released Arc browser

The release of the Arc browser for Windows sparked interest among cyber criminals who quickly launched a malvertising campaign impersonating the new software. The scheme uses Google search ads to lure potential victims with fake Arc installers. These installers employ various techniques, including …

Published: May 28, 2024

Downloadable IOCs: 9

Tag: malvertising

Attack reports

Cooking up trouble: How TamperedChef uses signed apps to deliver stealthy payloads

Russian RomCom Utilizing SocGholish to Deliver Mythic Agent to U.S. Companies Supporting Ukraine

Certified OysterLoader: Tracking Rhysida ransomware gang activity via code-signing certificates

Threat Actors Leverage SEO Poisoning and Malicious Ads to Distribute Backdoored Microsoft Teams Installers

Potentially Unwanted Applications (PUAs) weaponized for covert delivery

GPUGate Malware: Malicious GitHub Desktop Implants Use Hardware-Specific Decryption, Abuse Google Ads to Target Western Europe

Like PuTTY in Admin's Hands

Think before you Click(Fix): Analyzing the ClickFix social engineering technique

What happened in Vegas (that you actually want to know about)

Malvertising campaign leads to PS1Bot, a multi-stage malware framework

Sealed Chain of Deception: Actors leveraging Node.JS to Launch JSCeal

New BrowserVenom malware being distributed via fake DeepSeek phishing website

Crocodilus Mobile Malware: Evolving Fast, Going Global

The Sting of Fake Kling: Facebook Malvertising Lures Victims to Fake AI Generation Website

New Nitrogen Ransomware Targets Financial Firms in the US, UK and Canada

Nitrogen Dropping Cobalt Strike – A Combination of 'Chemical Elements'

The "free money" trap: How scammers exploit financial anxiety

Thunderstruck! Malicious ads for RVTools lead to ThunderShell payload

Malvertising campaign leads to info stealers hosted on GitHub

Beneath the Surface: Detecting and Blocking Hidden Malicious Traffic Distribution Systems

Booking a Threat: Inside LummaStealer's Fake reCAPTCHA

Lumma Stealer Malware Thrives as Unique Patterns Uncovered in the Infostealer's Domain Clusters

The great Google Ads heist: criminals ransack advertiser accounts via fake Google ads

Fake Captcha Driving Infostealer Infections and a Glimpse to the Dark Side of Internet Advertising

Hello again, FakeBat: popular loader returns after months-long hiatus

InfoStealer Malware Attacking Meta Business Page To Steal Logins

LUNAR SPIDER Enabling Ransomware Attacks on Financial Sector with Brute Ratel C4 and Latrodectus

Malicious CAPTCHA delivers Lumma and Amadey Trojans

A Measure of Motive: How Attackers Weaponize Digital Analytics Tools

Atomic macOS Stealer leads sensitive data theft on macOS

Detecting evolving threats: NetSupport RAT campaign

'Evil Twin' Apps Spread for Multiple Fraud Schemes

WorkersDevBackdoor and MadMxShell converge in malvertising campaigns

Fake Microsoft Teams for Mac delivers Atomic Stealer

Exposing FakeBat loader: distribution methods and adversary infrastructure

Polyfill supply chain attack hits 100K+ sites

Threat actors ride the hype for newly released Arc browser