Vidar APC Injection via CreateRemoteThread NtTestAlert into Browser Process

Ethan Andrews@eandrews

•updated Jun 22, 2026•0•0•4

Detects Vidar Stealer performing classic APC injection into a browser process (Chrome/Edge/Brave) using CreateRemoteThread with NtTestAlert as the thread start address and NtQueueApcThread to queue CryptUnprotectMemory for in-memory ABE v20_master_key decryption.