Sigma rule: Local Firewall Rules Enumeration Via NetFirewallRule Cmdlet

Rule

Title

Local Firewall Rules Enumeration Via NetFirewallRule Cmdlet

Status

test

Level

low

Author

Christopher Peacock @SecurePeacock, SCYTHE @scythe_io

Date

2023-07-13

File

rules-threat-hunting/windows/powershell/powershell_module/posh_pm_susp_netfirewallrule_recon.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects execution of "Get-NetFirewallRule" or "Show-NetFirewallRule" to enumerate the local firewall rules on a host.

Log source

product

windows

category

ps_module

definition

0ad03ef1-f21b-4a79-8ce8-e6900c54b65b

Detection

selection_payload:
    Payload|contains:
        - 'Get-NetFirewallRule'
        - 'Show-NetFirewallRule'
selection_contextinfo:
    ContextInfo|contains:
        - 'Get-NetFirewallRule'
        - 'Show-NetFirewallRule'
condition: 1 of selection_*

False positives (as the rule lists them)

• Administration scripts

Tags

• detection.threat-hunting
• attack.discovery
• attack.t1518.001
• attack.t1016

MITRE ATT&CK ids this rule names

• T1016
• T1518.001

References

• https://learn.microsoft.com/en-us/powershell/module/netsecurity/get-netfirewallrule?view=windowsserver2022-ps
• https://learn.microsoft.com/en-us/powershell/module/netsecurity/show-netfirewallrule?view=windowsserver2022-ps

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-threat-hunting/windows/powershell/powershell_module/posh_pm_susp_netfirewallrule_recon.yml