DllUnregisterServer Function Call Via Msiexec.EXE

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About the rule

Rule Type

Standard

Rule Description

Detects MsiExec loading a DLL and calling its DllUnregisterServer function

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\msiexec.exe" OR ORIGINALFILENAME = "\msiexec.exe") AND COMMANDLINE contains " -z , /z , –z , —z , ―z " AND COMMANDLINE contains ".dll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113