EDR-Killer Ecosystem Expansion Requires Stronger BYOVD Defenses

This report examines the expanding ecosystem of EDR-killer tools that abuse legitimately signed, vulnerable Windows kernel drivers (BYOVD) to disable endpoint detection and response prior to ransomware deployment; it details how attackers leverage signed driver variants, the difficulties of blocklisting and HVCI bypasses, and Microsoft's planned removal of trust for cross-signed drivers while noting practical enforcement and compatibility limitations.