Winrar Execution in Non-Standard Folder

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About the rule

Rule Type

Standard

Rule Description

Detects a suspicious winrar execution in a folder which is not the default installation folder

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\rar.exe,\winrar.exe" OR MESSAGE = "Command line RAR") AND (PROCESSNAME notendswith "\UnRAR.exe" AND PROCESSNAME notcontains ":\Program Files (x86)\WinRAR\,:\Program Files\WinRAR") AND PROCESSNAME notcontains ":\Windows\Temp" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Florian Roth (Nextron Systems), Tigzy