Malicious bcdedit Recovery Tampering Disabling Windows Boot Repair

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1490Inhibit System Recovery

What it detects

This rule detects bcdedit disabling automatic recovery and forcing the system to ignore all boot failures, an inhibit-recovery technique used by the Crux ransomware operation. Turning off recovery and boot repair prevents the operating system from self-healing after encryption. This tampering is almost exclusively associated with ransomware impact preparation.

Reporting behind it

Related detections9 linkedT1490 — drag to rearrange

Malicious Shadow Copy Deletion via Vssadmin Quiet

Malicious Boot Recovery Tampering via Bcdedit

Suspicious Free Space Wiping via Cipher

Malicious Shadow Copy Deletion via WMIC by DragonForce Ransomware (via process_creation)

Suspicious Symlink Evaluation Enablement via fsutil behavior set (via process_creation)

Malicious Shadow Copy Deletion via PowerShell Win32_ShadowCopy Remove-CimInstance (via process_creation)

Malicious Shadow Copy and Backup Deletion via vssadmin wmic and wbadmin (via process_creation)

Malicious Volume Shadow Copy Deletion via Vssadmin

Malicious Inhibit System Recovery via Native Backup and Shadow Copy Deletion (via process_creation)

Malicious bcdedit Recovery Tampering Disabling Windows Boot Repair

Pivot detection · T1490 · 9 related

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