Potential Renamed Rundll32 Execution
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About the rule
Rule Type
Standard
Rule Description
Detects when 'DllRegisterServer' is called in the commandline and the image is not rundll32. This could mean that the 'rundll32' utility has been renamed in order to avoid detection
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND COMMANDLINE contains "DllRegisterServer" AND PROCESSNAME notendswith "\rundll32.exe" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
