Regsvr32 DLL Execution With Uncommon Extension
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About the rule
Rule Type
Standard
Rule Description
Detects a "regsvr32" execution where the DLL doesn't contain a common file extension.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\regsvr32.exe" OR ORIGINALFILENAME = "REGSVR32.EXE") AND (COMMANDLINE notcontains ".ax,.cpl,.dll,.ocx" AND isExist(COMMANDLINE) AND COMMANDLINE != "") AND COMMANDLINE notcontains ".ppl,.bav" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
