Detectionhightest
Suspicious Reg Add BitLocker
Detects suspicious addition to BitLocker related registry keys via the reg.exe utility
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
CommandLine|contains|all:
- 'REG'
- 'ADD'
- '\SOFTWARE\Policies\Microsoft\FVE'
- '/v'
- '/f'
CommandLine|contains:
- 'EnableBDEWithNoTPM'
- 'UseAdvancedStartup'
- 'UseTPM'
- 'UseTPMKey'
- 'UseTPMKeyPIN'
- 'RecoveryKeyMessageSource'
- 'UseTPMPIN'
- 'RecoveryKeyMessage'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
References
MITRE ATT&CK
Tactics
Techniques
Rule Metadata
Rule ID
0e0255bf-2548-47b8-9582-c0955c9283f5
Status
test
Level
high
Type
Detection
Created
Mon Nov 15
Modified
Fri Sep 09
Author
Path
rules/windows/process_creation/proc_creation_win_reg_bitlocker.yml
Raw Tags
attack.impactattack.t1486