Suspicious Eventlog Clearing or Configuration Change Activity

detection:
  filter_main_msiexec:
    CommandLine|contains: ' sl '
    ParentImage:
      - 'C:\Windows\SysWOW64\msiexec.exe'
      - 'C:\Windows\System32\msiexec.exe'
  selection_other_ps_cmd:
    - CommandLine|contains:
        - 'Clear-EventLog '
        - 'Remove-EventLog '
        - 'Limit-EventLog '
        - 'Clear-WinEvent '
    - CommandLine|contains|all:
        - 'Eventing.Reader.EventLogSession'
        - 'ClearLog'
    - CommandLine|contains|all:
        - 'Diagnostics.EventLog'
        - 'Clear'
  selection_other_ps_img:
    Image|endswith:
      - '\powershell.exe'
      - '\powershell_ise.exe'
      - '\pwsh.exe'
  selection_other_wmi:
    CommandLine|contains: 'ClearEventLog'
    Image|endswith:
      - '\powershell.exe'
      - '\powershell_ise.exe'
      - '\pwsh.exe'
      - '\wmic.exe'
  selection_wevtutil_cmd:
    CommandLine|contains:
      - 'clear-log '
      - ' cl '
      - 'set-log '
      - ' sl '
      - 'lfn:'
  selection_wevtutil_img:
    - Image|endswith: '\wevtutil.exe'
    - OriginalFileName: 'wevtutil.exe'
  condition: ((all of selection_wevtutil_*) or (all of selection_other_ps_*) or selection_other_wmi) and not 1 of filter_main_*

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Ecco, Daniil Yugoslavskiy, oscd.community, D3F7A5105, Swachchhanda Shrawan Poudel (Nextron Systems), under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.