Suspicious Program Location Whitelisted In Firewall Via Netsh.EXE
A Sigma rule for process creation on Windows, by Sander Wiebing, Jonhnathan Ribeiro, Daniil Yugoslavskiy, oscd.community.
high 1 ATT&CK technique 1 program it names
What it looks for
detection:
selection_cli:
- CommandLine|contains|all:
- 'firewall'
- 'add'
- 'allowedprogram'
- CommandLine|contains|all:
- 'advfirewall'
- 'firewall'
- 'add'
- 'rule'
- 'action=allow'
- 'program='
selection_img:
- Image|endswith: '\netsh.exe'
- OriginalFileName: 'netsh.exe'
selection_paths:
CommandLine|contains:
- ':\$Recycle.bin\'
- ':\RECYCLER.BIN\'
- ':\RECYCLERS.BIN\'
- ':\SystemVolumeInformation\'
- ':\Temp\'
- ':\Users\Default\'
- ':\Users\Desktop\'
- ':\Users\Public\'
- ':\Windows\addins\'
- ':\Windows\cursors\'
- ':\Windows\debug\'
- ':\Windows\drivers\'
- ':\Windows\fonts\'
- ':\Windows\help\'
- ':\Windows\system32\tasks\'
- ':\Windows\Tasks\'
- ':\Windows\Temp\'
- '\Downloads\'
- '\Local Settings\Temporary Internet Files\'
- '\Temporary Internet Files\Content.Outlook\'
- '%Public%\'
- '%TEMP%'
- '%TMP%'
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 Sander Wiebing, Jonhnathan Ribeiro, 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.
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
ATT&CK
T1686.003Disable or Modify System Firewall: Windows Host Firewall