Detection rules › Sigma
Potential AD User Enumeration From Non-Machine Account
Detects read access to a domain user from a non-machine account
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Discovery | T1087.002 Account Discovery: Domain Account |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Security-Auditing | 4662 | An operation was performed on an object. |
Stages and Predicates
Stage 1: selection
or:
AccessMask|endswith: '1?'
AccessMask|endswith: '3?'
AccessMask|endswith: '4?'
AccessMask|endswith: '7?'
AccessMask|endswith: '9?'
AccessMask|endswith: 'B?'
AccessMask|endswith: 'D?'
AccessMask|endswith: 'F?'
ObjectType|contains: 'bf967aba-0de6-11d0-a285-00aa003049e2'
Stage 2: not 1 of filter_main_*
or:
SubjectUserName|endswith: '$'
SubjectUserName|startswith: MSOL_
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 |
|---|---|---|
AccessMask | ends_with |
|
ObjectType | match |
|
SubjectUserName | ends_with |
|
SubjectUserName | starts_with |
|