Detection rules › Sigma
Security Eventlog Cleared
One of the Windows Eventlogs has been cleared. e.g. caused by "wevtutil cl" command execution
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1070.001 Indicator Removal: Clear Windows Event Logs |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Eventlog | 517 | The audit log was cleared (legacy Windows 2000/XP/2003 event; superseded by 1102). |
| Eventlog | 1102 | The audit log was cleared. |
Stages and Predicates
Stage 1: 1 of selection_517
Provider_Name: Security
Stage 2: 1 of selection_1102
Provider_Name: Microsoft-Windows-Eventlog
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 |
|---|---|---|
Provider_Name | eq |
|
Neighbors
Often fire together
Rules that target events appearing in the same incident timelines. They pattern-match on adjacent steps of the same TTP, so an alert from one is often paired with alerts from these. Useful for triage context and for assembling chained-detection rules.