CmdID

CmdID / Rules / Windows

Tap Installer Execution

A Sigma rule for process creation on Windows, by Daniil Yugoslavskiy, Ian Davis, oscd.community.

medium 1 ATT&CK technique

What it looks for

its detection, as SigmaHQ writes it
detection:
  filter_optional_avast:
    Image|contains:
      - ':\Program Files\Avast Software\SecureLine VPN\'
      - ':\Program Files (x86)\Avast Software\SecureLine VPN\'
  filter_optional_openvpn:
    Image|contains: ':\Program Files\OpenVPN Connect\drivers\tap\'
  filter_optional_protonvpn:
    Image|contains: ':\Program Files (x86)\Proton Technologies\ProtonVPNTap\installer\'
  selection:
    Image|endswith: '\tapinstall.exe'
  condition: selection and not 1 of filter_optional_*

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 Daniil Yugoslavskiy, Ian Davis, 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.

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
T1048Exfiltration Over Alternative Protocol