Suspicious WMIC Execution Via Office Process
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About the rule
Rule Type
Standard
Rule Description
Office application called wmic to proxye execution through a LOLBIN process. This is often used to break suspicious parent-child chain (Office app spawns LOLBin).
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND PARENTPROCESSNAME endswith "\WINWORD.EXE,\EXCEL.EXE,\POWERPNT.exe,\MSPUB.exe,\VISIO.exe,\MSACCESS.EXE,\EQNEDT32.EXE,\ONENOTE.EXE,\wordpad.exe,\wordview.exe" AND (PROCESSNAME endswith "\wbem\WMIC.exe" OR ORIGINALFILENAME = "wmic.exe") AND ((COMMANDLINE contains "process" AND COMMANDLINE contains "create" AND COMMANDLINE contains "call") AND COMMANDLINE contains "regsvr32,rundll32,msiexec,mshta,verclsid,wscript,cscript") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Vadim Khrykov, Cyb3rEng
