Windows Firewall Disabled via PowerShell

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About the rule

Rule Type

Standard

Rule Description

Detects attempts to disable the Windows Firewall using PowerShell

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\powershell.exe,\pwsh.exe,\powershell_ise.exe" OR ORIGINALFILENAME = "PowerShell.EXE,pwsh.dll") AND (COMMANDLINE contains "Set-NetFirewallProfile " AND COMMANDLINE contains " -Enabled " AND COMMANDLINE contains " False") AND COMMANDLINE contains " -All ,Public,Domain,Private" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Tim Rauch, Elastic (idea)