Cybercriminals Deploy CORNFLAKE.V3 Backdoor via ClickFix Tactic and Fake CAPTCHA Pages
25.08.2025
12840
ClickFix attacks deliver CORNFLAKE.V3 backdoor via fake CAPTCHAs, enabling multi-payload delivery and persistence since Sept 2024.
Cybercriminals Deploy CORNFLAKE.V3 Backdoor via ClickFix Tactic and Fake CAPTCHA Pages
Yo, listen up—cybercriminals are hitting hard with a new ClickFix attack that drops the CORNFLAKE.V3 backdoor using fake CAPTCHA pages. This isn't your average scam; it's a slick social engineering play that's been active since September 2024, delivering multiple payloads and ensuring persistence on infected systems.
The attack kicks off with a phishing email or malicious ad that lures victims to a fake website. There, they're hit with a CAPTCHA challenge—but it's all a trap. Once they click, it triggers a download that installs the backdoor, giving attackers full remote access. CORNFLAKE.V3 is nasty; it can execute commands, steal data, and even drop additional malware like ransomware or info-stealers.
Mandiant and Google's Threat Analysis Group are on this, tracking the campaign. They've linked it to known threat actors who've been evolving their tactics. The backdoor uses PowerShell for execution, making it stealthy and hard to detect with traditional AV. If you're in crypto or handling sensitive data, watch out—this one's targeting high-value targets for financial gain.
- • Attack method: Social engineering via fake CAPTCHAs in ClickFix campaigns.
- • Malware: CORNFLAKE.V3 backdoor, capable of multi-payload delivery and persistence mechanisms.
- • Timeline: Active since September 2024, with ongoing updates to evade detection.
- • Key players: Involves threat actors previously associated with similar campaigns, with ties to cryptocurrency theft.
- • Defense tips: Use advanced endpoint protection, educate users on phishing, and monitor for unusual PowerShell activity.
This attack underscores the sophistication of modern cyber threats, blending social engineering with advanced malware to bypass defenses. — Security researchers at Mandiant
Stay sharp, folks. This isn't just another headline—it's a real-world threat that's already causing breaches. Keep your systems patched, and maybe think twice before clicking on that next CAPTCHA. For more details, check out the full report from The Hacker News.
#backdoors#malvertising#malware#social engineering#phishing
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