Uncommon New Firewall Rule Added In Windows Firewall Exception List

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About the rule

Rule Type

Standard

Rule Description

Detects when a rule has been added to the Windows Firewall exception list

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Advanced Security - Firewall Rule Added" AND (ACTION != 2 AND SERVICENAME notstartswith "C:\Program Files (x86)\,C:\Program Files\,C:\Windows\System32\,C:\Windows\SysWOW64\,C:\Windows\WinSxS" AND SERVICENAME notcontains "C:\PerfLogs\,C:\Temp\,C:\Tmp\,C:\Users\Public\,C:\Windows\Tasks\,C:\Windows\Temp\,\AppData\Local\Temp" AND isExist(SERVICENAME)) AND ((PROCESSNAME notstartswith "C:\ProgramData\Microsoft\Windows Defender\Platform" OR PROCESSNAME notendswith "\MsMpEng.exe") AND (PROCESSNAME != "C:\Windows\System32\svchost.exe,C:\Windows\System32\dllhost.exe" OR SERVICENAME != "")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.PROCESSNAME,Action1.RULENAME,Action1.ACTION,Action1.OBJECTNAME,Action1.OBJECTTYPE

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113