Detection rules › Sigma
Abuse of Service Permissions to Hide Services Via Set-Service
Detects usage of the "Set-Service" powershell cmdlet to configure a new SecurityDescriptor that allows a service to be hidden from other utilities such as "sc.exe", "Get-Service"...etc. (Works only in powershell 7)
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Persistence | T1574.011 Hijack Execution Flow: Services Registry Permissions Weakness |
| Privilege Escalation | T1574.011 Hijack Execution Flow: Services Registry Permissions Weakness |
| Defense Evasion | T1574.011 Hijack Execution Flow: Services Registry Permissions Weakness |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: all of selection_img
or:
Image|endswith: '\pwsh.exe'
OriginalFileName: pwsh.dll
Stage 2: all of selection_sddl
CommandLine|contains: DCLCWPDTSD
CommandLine|contains: 'Set-Service '
Stage 3: all of selection_cmdlet
or:
CommandLine|contains: '-SecurityDescriptorSddl '
CommandLine|contains: '-sd '
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 |
|
Image | ends_with |
|
OriginalFileName | eq |
|