Potential Pikabot Hollowing Activity
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About the rule
Rule Type
Standard
Rule Description
Detects the execution of rundll32 that leads to the invocation of legitimate Windows binaries. The malware Pikabot has been seen to use this technique for process hollowing through hard-coded Windows binaries
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PARENTPROCESSNAME endswith "\rundll32.exe" AND PROCESSNAME endswith "\SearchFilterHost.exe,\SearchProtocolHost.exe,\sndvol.exe,\wermgr.exe,\wwahost.exe") AND (PROCESSNAME notendswith "\sndvol.exe" OR PARENTPROCESSCOMMANDLINE notcontains "mmsys.cpl") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Andreas Braathen (mnemonic.io)
