Executive Summary

Microsoft Threat Intelligence reports that the TerminalFix campaign uses a multi‑stage intrusion chain. Attackers first deliver a fake CAPTCHA prompt to trick users, then sideload a malicious DLL to bypass defenses, and finally establish a reverse tunnel to maintain persistence and exfiltrate data. The post includes detection techniques and hunting guidance for security teams.

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Intelligence Metadata - Source Publisher: Microsoft Security - Published Date: 2026-08-29T03:43:27+00:00 - Category: threat-intel

Original Description: Microsoft Threat Intelligence provides analysis of a ClickFix campaign that uses fake CAPTCHA prompts, DLL sideloading, and a reverse tunnel, with detections and hunting guidance. The post TerminalFix campaign deploys a reverse tunnel through multistage intrusion appeared first on Microsoft Security Blog.

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