CmdID

CmdID / Rules / Windows

Devcon Execution Disabling VMware VMCI Device

A Sigma rule for process creation on Windows, by Matt Anderson, Dray Agha, Anna Pham (Huntress).

high 2 ATT&CK techniques

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection_action:
    CommandLine|contains: ' disable '
  selection_img:
    - Image|endswith: '\devcon.exe'
    - OriginalFileName: 'DevCon.exe'
  selection_vmci_pci:
    CommandLine|contains:
      - '15AD&DEV_0740'
      - 'VMWVMCIHOSTDEV'
  condition: all of selection_*

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 Matt Anderson, Dray Agha, Anna Pham (Huntress), 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.

None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.

ATT&CK

the techniques it is tagged with
T1543.003Create or Modify System Process: Windows Service
T1685Disable or Modify Tools