Legitimate Application Dropped Executable

Last updated on:

About the rule

Rule Type

Standard

Rule Description

Detects programs on a Windows system that should not write executables to disk

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND PROCESSNAME endswith "\eqnedt32.exe,\wordpad.exe,\wordview.exe,\certutil.exe,\certoc.exe,\CertReq.exe,\Desktopimgdownldr.exe,\esentutl.exe,\mshta.exe,\AcroRd32.exe,\RdrCEF.exe,\hh.exe,\finger.exe" AND (FILENAME endswith ".exe,.dll,.ocx" OR OBJECTNAME endswith ".exe,.dll,.ocx") select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113, Florian Roth (Nextron Systems)