Firewall Disabled via Netsh.EXE

A Sigma rule for process creation on Windows, by Fatih Sirin.

medium 1 ATT&CK technique 1 program it names

What it looks for

its detection, as SigmaHQ writes it

detection:
  selection_cli_1:
    CommandLine|contains|all:
      - 'firewall'
      - 'set'
      - 'opmode'
      - 'disable'
  selection_cli_2:
    CommandLine|contains|all:
      - 'advfirewall'
      - 'set'
      - 'state'
      - 'off'
  selection_img:
    - Image|endswith: '\netsh.exe'
    - OriginalFileName: 'netsh.exe'
  condition: selection_img and 1 of selection_cli_*

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 Fatih Sirin, 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.

Programs and files it names

their pages here

netsh.exe

ATT&CK

the techniques it is tagged with

T1686.003Disable or Modify System Firewall: Windows Host Firewall

Firewall Disabled via Netsh.EXE

What it looks for

Programs and files it names

ATT&CK

Other rules for T1686.003 Disable or Modify System Firewall: Windows Host Firewall