Detection rules › Kusto Query Language
Disabling Security Services via Registry
This query checks for processes modifying the registry to disable security features. This is a common technique used by threat actors for defence evasion.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1562 Impair Defenses |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
| Security-Auditing | 4688 | A new process has been created. |
| Defender-DeviceProcessEvents | 9001000 | Process activity (any) |
Stages and Predicates
Stage 1: source
DeviceProcessEvents
Stage 2: where
and
InitiatingProcessCommandLine match ["DisableRealtimeMonitoring", "UseTPMKey", "UseTPMKeyPIN", "UseAdvancedStartup", "EnableBDEWithNoTPM", "RecoveryKeyMessageSource"]
InitiatingProcessCommandLine match ["\"reg\"", "add", "\"HKLM\\SOFTWARE\\Policies\\", "/v", "/t", "REG_DWORD", "/d", "/f"]
Stage 3: extend
Stage 4: extend
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 |
|---|---|---|
InitiatingProcessCommandLine | match |
|