
Fake LastPass Authenticator Campaign Exploits Microsoft-Signed Driver to Bypass EDR Solutions
In September 2026, threat actors deployed a sophisticated infostealer campaign using a fake LastPass Authenticator installer hosted on GitHub. The malicious package leveraged DLL side-loading techniques and a Microsoft-signed kernel driver (Alinubx.sys) to disable antivirus and EDR solutions before deploying the Rapunzel infostealer. The attack targeted saved passwords from over 24 browsers, cryptocurrency wallets, and credentials from Discord, Steam, and Telegram, exploiting Google's app-bound encryption through browser injection techniques. The campaign demonstrated advanced evasion by using a legitimately signed but vulnerable driver from CnCrypt, renamed to avoid detection, and successfully bypassed Microsoft's vulnerable driver blocklist due to hash-based matching limitations.
Kill Chain
