Compress Data and Lock With Password for Exfiltration With 7-ZIP

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About the rule

Rule Type

Standard

Rule Description

An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (MESSAGE contains "7-Zip" OR PROCESSNAME endswith "\7z.exe,\7zr.exe,\7za.exe" OR ORIGINALFILENAME = "7z.exe,7za.exe") AND COMMANDLINE contains " -p" AND COMMANDLINE contains " a , u " 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