Fake LastPass Authenticator Installer Uses Microsoft-Signed Driver to Disable Antivirus and EDR

Executive Summary

Researchers at LastPass and Delphos Labs uncovered a malicious installer on GitHub that installs a Windows kernel driver signed by Microsoft’s hardware‑compatibility program. The driver disables antivirus and EDR software before a password‑stealing payload runs, evading detection on VirusTotal. The attack demonstrates how legitimate signatures can be abused to bypass security controls.


Intelligence Metadata - Source Publisher: The Hacker News - Published Date: 2026-09-21T17:31:01+00:00 - Category: threat-intel

Original Description: A fake LastPass Authenticator installer offered on GitHub installs a Windows kernel driver that shuts off antivirus and other security software before a password stealer runs if a victim downloads and runs it, researchers at LastPass and Delphos Labs said on September 17. Microsoft's own hardware-compatibility program signs the driver, scored zero detections on VirusTotal when researchers

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Source: The Hacker News