Threat Huntlowtest
New Windows Firewall Rule Added Via New-NetFirewallRule Cmdlet - ScriptBlock
Detects when a powershell script contains calls to the "New-NetFirewallRule" cmdlet in order to add a new firewall rule with an "Allow" action.
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Hunting Hypothesis
Log Source
WindowsPowerShell Script
ProductWindows← raw: windows
CategoryPowerShell Script← raw: ps_script
Definition
Requirements: Script Block Logging must be enabled
Detection Logic
Detection Logic1 selector
detection:
selection:
ScriptBlockText|contains: 'New-NetFirewallRule*-Action*Allow'
condition: selectionFalse Positives
Administrator script
MITRE ATT&CK
Tactics
Sub-techniques
Other
detection.threat-hunting
Rule Metadata
Rule ID
8d31dd2e-b582-48ca-826e-dcaa2c1ca264
Status
test
Level
low
Type
Threat Hunt
Created
Fri May 10
Author
Path
rules-threat-hunting/windows/powershell/powershell_script/posh_ps_new_netfirewallrule_allow.yml
Raw Tags
attack.defense-evasionattack.t1562.004detection.threat-hunting