Key Findings ACR Stealer, active since 2024, steals browser passwords, session tokens, PDFs, and Microsoft 365 documents through ClickFix social engineering lures Two distinct delivery chains identified: one leaves disk artifacts, the other operates entirely in memory using steganography and pixel-embedded payloads No vulnerabilities exploited; both chains rely entirely on victims pasting commands into Run boxes or PowerShell Microsoft recommends revoking tokens rather than r