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TerminalFix Uses Fake Cloudflare CAPTCHAs to Deploy Reverse-Tunnel Backdoor

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TerminalFix Uses Fake Cloudflare CAPTCHAs to Deploy Reverse-Tunnel Backdoor

Microsoft disclosed a ClickFix variant called TerminalFix that tricks users into executing malicious commands via Windows Terminal or PowerShell instead of the traditional Windows Run dialog. The campaign uses fake Cloudflare CAPTCHA prompts to increase the likelihood that users will run complex commands. This approach exploits user familiarity with legitimate command-line tools to bypass initial skepticism.

Why it matters: Windows users and organizations need to educate end-users on the dangers of copy-pasting commands from unsolicited sources, as TerminalFix lowers the friction to executing arbitrary code on victim machines.

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Correction

Correction recorded as of .

threat intel

TerminalFix Uses Fake Cloudflare CAPTCHAs to Deploy Reverse-Tunnel Backdoor

Microsoft disclosed a ClickFix variant called TerminalFix that tricks users into executing malicious commands via Windows Terminal or PowerShell instead of the traditional Windows Run dialog. The campaign uses fake Cloudflare CAPTCHA prompts to increase the likelihood that users will run complex commands. This approach exploits user familiarity with legitimate command-line tools to bypass initial skepticism.

Why it matters: Windows users and organizations need to educate end-users on the dangers of copy-pasting commands from unsolicited sources, as TerminalFix lowers the friction to executing arbitrary code on victim machines.

VendorsMicrosoftCloudflare
Source published
First seen by Cybersecurity Tracker

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