Suspicious WSMAN Provider Image Loads

Last updated on:

Applies to: Log360Log360 Cloud

About the rule

Rule Type

Standard

Rule Description

Detects signs of potential use of the WSMAN provider from uncommon processes locally and remote execution.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Image Loaded" AND ((OBJECTNAME endswith "\WsmSvc.dll,\WsmAuto.dll,\Microsoft.WSMan.Management.ni.dll" OR ORIGINALFILENAME = "WsmSvc.dll,WSMANAUTOMATION.DLL,Microsoft.WSMan.Management.dll") OR (PROCESSNAME endswith "\svchost.exe" AND ORIGINALFILENAME = "WsmWmiPl.dll")) AND (PROCESSNAME notendswith "\powershell.exe,C:\Windows\System32\sdiagnhost.exe,C:\Windows\System32\services.exe" AND COMMANDLINE notcontains "svchost.exe -k netsvcs -p -s BITS,svchost.exe -k GraphicsPerfSvcGroup -s GraphicsPerfSvc,svchost.exe -k NetworkService -p -s Wecsvc,svchost.exe -k netsvcs" AND (PROCESSNAME notstartswith "C:\Windows\Microsoft.NET\Framework64\v,C:\Windows\Microsoft.NET\Framework\v,C:\Windows\Microsoft.NET\FrameworkArm\v,C:\Windows\Microsoft.NET\FrameworkArm64\v" OR PROCESSNAME notendswith "\mscorsvw.exe") AND PROCESSNAME != "C:\Windows\System32\Configure-SMRemoting.exe,C:\Windows\System32\ServerManager.exe" AND PROCESSNAME notstartswith "C:\Windows\Temp\asgard2-agent" AND PROCESSNAME notstartswith "C:\Program Files\Citrix" AND PROCESSNAME notendswith "\powershell_ise.exe" AND PROCESSNAME notstartswith "C:\$WINDOWS.~BT\Sources") AND (PROCESSNAME notendswith "\svchost.exe" OR isExist(COMMANDLINE)) select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.PRODUCT_NAME,Action1.OBJECTNAME,Action1.SIGNATURE,Action1.SIGNATURESTATUS

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)