Detection rules › Sigma
Suspicious Reg Add BitLocker
Detects suspicious addition to BitLocker related registry keys via the reg.exe utility
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Impact | T1486 Data Encrypted for Impact |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
Stages and Predicates
Stage 1: selection
or:
CommandLine|contains: EnableBDEWithNoTPM
CommandLine|contains: RecoveryKeyMessage
CommandLine|contains: RecoveryKeyMessageSource
CommandLine|contains: UseAdvancedStartup
CommandLine|contains: UseTPM
CommandLine|contains: UseTPMKey
CommandLine|contains: UseTPMKeyPIN
CommandLine|contains: UseTPMPIN
CommandLine|contains: '/f'
CommandLine|contains: '/v'
CommandLine|contains: ADD
CommandLine|contains: REG
CommandLine|contains: '\SOFTWARE\Policies\Microsoft\FVE'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|