clear Windows event logs

rule:
  meta:
    name: clear Windows event logs
    namespace: anti-analysis/anti-forensic/clear-logs
    authors:
      - michael.hunhoff@mandiant.com
    scopes:
      static: function
      dynamic: thread
    att&ck:
      - Defense Evasion::Indicator Removal::Clear Windows Event Logs [T1070.001]
    examples:
      - 82BF6347ACF15E5D883715DC289D8A2B:0x14005E0C0
      - mimikatz.exe_:0x45228B
  features:
    - and:
      - os: windows
      - or:
        - and:
          - or:
            - api: advapi32.ElfClearEventLogFile
            - api: advapi32.ClearEventLog
          - optional:
            - api: advapi32.OpenEventLog
            - api: advapi32.GetNumberOfEventLogRecords
        - basic block:
          - and:
            - string: /wevtutil(\.exe)?\s+(clear-log|cl)/i
        - call:
          - and:
            - string: /wevtutil(\.exe)?\s+(clear-log|cl)/i