Vidar Stealer v20_master_key Chrome Memory Scan via NtQueryVirtualMemory

Ibrahim Saud@tektrix

•updated Jun 24, 2026•0•0•3

Detects Vidar Stealer attempting to access virtual memory of Chrome, Edge, or Brave processes to locate the v20_master_key, which is used to bypass Application-Bound Encryption. This rule also identifies suspicious browser process creations with specific command-line arguments that might indicate stealer activity.