Identifies attempts to clear or disable Windows event log stores using the Windows wevetutil command. This is often done by attackers in an attempt to evade detection or destroy forensic evidence on a system.
Rule type: eql
Risk score: 21
Runs every: 5m
Maximum alerts per execution: 100
- Threat Detection
- Defense Evasion
Rule license: Elastic License v2
## Config If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
process where event.type in ("process_started", "start") and (process.name : "wevtutil.exe" or process.pe.original_file_name == "wevtutil.exe") and process.args : ("/e:false", "cl", "clear-log") or process.name : ("powershell.exe", "pwsh.exe", "powershell_ise.exe") and process.args : "Clear-EventLog"
Framework: MITRE ATT&CKTM
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
- Name: Indicator Removal on Host
- ID: T1070
- Reference URL: https://attack.mitre.org/techniques/T1070/
- Name: Clear Windows Event Logs
- ID: T1070.001
- Reference URL: https://attack.mitre.org/techniques/T1070/001/