Local Accounts Discovery

detection:
  filter_cmd:
    CommandLine|contains: ' rmdir '
  filter_net:
    CommandLine|contains:
      - '/domain'
      - '/add'
      - '/delete'
      - '/active'
      - '/expires'
      - '/passwordreq'
      - '/scriptpath'
      - '/times'
      - '/workstations'
  selection_cmd:
    CommandLine|contains|all:
      - ' /c'
      - 'dir '
      - '\Users\'
    Image|endswith: '\cmd.exe'
  selection_net:
    CommandLine|contains: 'user'
    Image|endswith:
      - '\net.exe'
      - '\net1.exe'
  selection_other_cmdkey:
    CommandLine|contains: ' /l'
    Image|endswith: '\cmdkey.exe'
  selection_other_img:
    - Image|endswith:
        - '\whoami.exe'
        - '\quser.exe'
        - '\qwinsta.exe'
    - OriginalFileName:
        - 'whoami.exe'
        - 'quser.exe'
        - 'qwinsta.exe'
  selection_other_wmi:
    CommandLine|contains|all:
      - 'useraccount'
      - 'get'
    Image|endswith: '\wmic.exe'
  condition: (selection_cmd and not filter_cmd) or (selection_net and not filter_net) or 1 of selection_other_*

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 Timur Zinniatullin, Daniil Yugoslavskiy, oscd.community, 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.

And 1 more example on CmdID’s program pages.

The commands LOLBAS or GTFOBins documents for cmdkey.exe trip it too: each is on its program’s page, read by CmdID.