Malicious BitLocker Abuse for Ransomware via PowerShell (via ps_script)

ATT&CK techniques

Impact

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
- T1486Data Encrypted for Impact

What it detects

This rule detects PowerShell that enables BitLocker while removing the key protectors which the ShrinkLocker ransomware does to encrypt drives and lock out the legitimate owner without leaving a recovery key.

Reporting behind it

Related detections9 linkedT1486 — drag to rearrange

Possible Akira Ransomware Note or Encrypted Extension Creation

Malicious Storm-2603 Ransom Note File Creation

Possible Ransomware Note or Encrypted File Extension Creation

BitLocker Feature Activation on Multiple Hosts - Native (via bitlocker)

FunkSec Ransomware Encryption Artifacts via funksec Extension and Markdown Ransom Note (via file_event)

INC Ransomware Ransom Note INC-README Written to Disk (via file_event)

Malicious DEVMAN Ransomware Encrypted File and Note Artifacts

Malicious Akira Ransomware Encrypted File Extension via File Event

Malicious WeaXor Ransomware Encryption Artifacts on Disk (via file_event)

Malicious BitLocker Abuse for Ransomware via PowerShell (via ps_script)

Pivot detection · T1486 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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