Wsmprovhost LOLBAS Execution Process Spawn
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About the rule
Rule Type
Standard
Rule Description
Detects instances where Living Off The Land Binaries and Scripts (LOLBAS) are executed by spawning processes through "Wsmprovhost"
Severity
Critical
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PARENTPROCESSNAME endswith "Windows\System32\wsmprovhost.exe,Windows\SysWow64\wsmprovhost.exe,WINNT\system32\wsmprovhost.exe" AND (PROCESSNAME endswith "Regsvcs.exe,Ftp.exe,OfflineScannerShell.exe,Rasautou.exe,Schtasks.exe,Xwizard.exe,Pnputil.exe,Atbroker.exe,Pcwrun.exe,Ttdinject.exe,Mshta.exe,Bitsadmin.exe,Certoc.exe,Ieexec.exe,Microsoft.Workflow.Compiler.exe,Runscripthelper.exe,Forfiles.exe,Msbuild.exe,Register-cimprovider.exe,Tttracer.exe" OR PROCESSNAME endswith "Ie4uinit.exe,Bash.exe,Hh.exe,SettingSyncHost.exe,Cmstp.exe,Mmc.exe,Stordiag.exe,Scriptrunner.exe,Odbcconf.exe,Extexport.exe,Msdt.exe,WorkFolders.exe,Diskshadow.exe,Mavinject.exe,Regasm.exe,Rundll32.exe,Regsvr32.exe,Msiexec.exe,Wuauclt.exe,Presentationhost.exe" OR PROCESSNAME endswith "Wmic.exe,Runonce.exe,Syncappvpublishingserver.exe,Verclsid.exe,Infdefaultinstall.exe,Installutil.exe,Netsh.exe,Wab.exe,Dnscmd.exe" OR PROCESSNAME endswith "At.exe,Pcalua.exe,Msconfig.exe,Windows\System32\dllhost.exe,Windows\SysWow64\dllhost.exe,WINNT\system32\dllhost.exe,Windows\System32\gpscript.exe,Windows\SysWow64\gpscript.exe,WINNT\system32\gpscript.exe,Windows\explorer.exe,Windows\SysWow64\explorer.exe")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
