Tag: captcha

11 Attack Reports | 0 Vulnerabilities

Attack reports

New Evasive Campaign Delivers LegionLoader via Fake CAPTCHA & CloudFlare Turnstile

A new malicious campaign has been discovered targeting users searching for PDF documents online. The attack uses fake CAPTCHAs and CloudFlare Turnstile to deliver LegionLoader malware, which then installs a malicious browser extension. The infection chain involves a drive-by download, execution of …

drive-by download

process hollowing

browser extension

cloudflare turnstile

Published: April 5, 2025

Downloadable IOCs: 5

Proactive ClickFix Threat Hunting with Hunt.io

ClickFix is a browser-based delivery technique that uses deceptive prompts and clipboard hijacking to trick users into executing malicious commands. Cybercriminals and advanced actors employ this method to deploy malware, primarily information stealers. The technique involves luring users with fake…

credential theft

information stealers

malware delivery

browser-based attacks

clipboard hijacking

Published: April 4, 2025

Downloadable IOCs: 0

SVG Phishing Malware Being Distributed with Analysis Obstruction Feature

A sophisticated phishing malware using Scalable Vector Graphics (SVG) format has been identified. The malware embeds malicious scripts within SVG files, using Base64 encoding to bypass detection. It employs various techniques to obstruct analysis, including blocking automation tools, preventing spe…

microsoft impersonation

analysis obstruction

svg phishing malware

vector graphics

Published: April 1, 2025

Downloadable IOCs: 0

The rising threat of social engineering through fake fixes

ClickFix is an emerging social engineering tactic that manipulates users into executing malicious actions under the guise of troubleshooting or system maintenance. Attackers present fake error messages, CAPTCHA verifications, or system prompts to convince users to take actions that compromise their…

social engineering

Published: March 21, 2025

Downloadable IOCs: 4

DeepSeek Lure Used To Spread Malware

Cybercriminals are exploiting DeepSeek's popularity by creating fake look-alike domains to deliver the Vidar information stealer. The attack chain involves a deceptive website that prompts users to complete a fake partner registration, leading to a malicious CAPTCHA page. This page injects a PowerS…

brand impersonation

clipboard injection

Published: February 25, 2025

Downloadable IOCs: 40

ClickFix Scam Exposed! Protect Your Data Before It's Too Late

Cybercriminals are exploiting DeepSeek's popularity to launch ClickFix phishing campaigns, tricking users into clicking fake CAPTCHA links that steal credentials and install malware like Vidar and Lumma Stealer. These attacks impersonate DeepSeek's branding to appear legitimate and bypass security …

social engineering

credential theft

Published: February 11, 2025

Downloadable IOCs: 7

Infostealer LummaC2 Spreading Through Fake CAPTCHA Verification Page

A new distribution method for the LummaC2 infostealer malware has been identified, using a fake CAPTCHA verification page. The process begins with a deceptive authentication screen that copies a malicious command to the clipboard when users click 'I'm not a robot'. This command executes an obfuscat…

Published: January 13, 2025

Downloadable IOCs: 4

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…

social-engineering

Published: October 29, 2024

Downloadable IOCs: 1

Tricks and Treats: New Pixel-Level Deception

GHOSTPULSE malware has evolved to embed malicious data within pixel structures of PNG files, replacing its previous IDAT chunk technique. Recent campaigns involve social engineering tactics, tricking victims with CAPTCHA validations that trigger malicious commands through keyboard shortcuts. The ma…

social engineering

keyboard shortcuts

configuration extractor

pixel-level deception

Published: October 18, 2024

Downloadable IOCs: 9

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 …

evasion techniques

kraken ransomware

link shorteners

digital analytics

advertising tools

Published: September 30, 2024

Downloadable IOCs: 10

Rivers of Phish: Sophisticated Phishing Targets Russia's Perceived Enemies Around the Globe

An extensive investigation uncovered an elaborate phishing campaign conducted by a Russia-based threat actor known as COLDRIVER, attributed to Russia's Federal Security Service. The campaign employed personalized social engineering tactics to target civil society groups, NGOs, journalists, and gove…

Published: August 14, 2024

Downloadable IOCs: 28

Click here to see more Attack Reports