CobaltStrike Load by Rundll32
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About the rule
Rule Type
Standard
Rule Description
Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\rundll32.exe" OR ORIGINALFILENAME = "RUNDLL32.EXE" OR COMMANDLINE contains "rundll32.exe,rundll32 ") AND (COMMANDLINE contains ".dll" AND COMMANDLINE endswith " StartW,,StartW") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Wojciech Lesicki
