Bring Your Own Vulnerable Driver: What Detection Teams Should Actually Hunt

The report analyzes four distinct classes of EDR-killing techniques—signed vulnerable drivers (BYOVD), installer/upgrade abuse, admin-to-kernel callback removal, and driverless user-mode suspension—documents active use by ransomware groups and commoditized tool markets, and provides pragmatic detection hunts tied to telemetry (e.g., Sysmon Event ID 6, System Event 7045, Event ID 7031, callback-integrity checks, and agent-heartbeat monitoring) with tuning and false-positive guidance.