Detection rules › Sigma
AD Groups Or Users Enumeration Using PowerShell - PoshModule
Adversaries may attempt to find domain-level groups and permission settings. The knowledge of domain-level permission groups can help adversaries determine which groups exist and which users belong to a particular group. Adversaries may use this information to determine which users have elevated permissions, such as domain administrators.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1069.001 Permission Groups Discovery: Local Groups |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| PowerShell | 4103 | Payload Context: ContextInfo User Data: UserData. |
Stages and Predicates
Stage 1: 1 of selection_ad_principal
or:
ContextInfo|contains: get-ADPrincipalGroupMembership
Payload|contains: get-ADPrincipalGroupMembership
Stage 2: 1 of selection_get_aduser
or:
ContextInfo|contains: '-f '
ContextInfo|contains: '-pr '
ContextInfo|contains: DoesNotRequirePreAuth
ContextInfo|contains: get-aduser
Payload|contains: '-f '
Payload|contains: '-pr '
Payload|contains: DoesNotRequirePreAuth
Payload|contains: get-aduser
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 |
|---|---|---|
ContextInfo | match |
|
Payload | match |
|