TLDR InfoSec · ATTACKS & VULNERABILITIES
LARGE-SCALE ATTACK TARGETING MACS VIA GITHUB PAGES IMPERSONATING COMPANIES TO ATTEMPT TO DELIVER STEALER MALWARE
Summary from the TLDR InfoSec newsletter
Attackers created fraudulent GitHub Pages impersonating over 100 companies (including LastPass, 1Password, financial institutions, and tech firms) using SEO to rank high in search results and trick Mac users into downloading fake software installers. The malicious sites redirect victims through multiple layers to ultimately execute a terminal command that downloads Atomic Stealer malware, which harvests credentials and sensitive data from infected systems. The campaign leverages trusted GitHub infrastructure and creates multiple backup repositories under different usernames to evade takedown efforts while targeting a broad range of high-value software applications.