Rar Usage with Password and Compression Level

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About the rule

Rule Type

Standard

Rule Description

Detects the use of rar.exe, on the command line, to create an archive with password protection or with a specific compression level. This is pretty indicative of malicious actions.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND COMMANDLINE contains " -hp" AND COMMANDLINE contains " -m, a " select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

@ROxPinTeddy