Potential Persistence Via Excel Add-in - Registry

Last updated on:

About the rule

Rule Type

Standard

Rule Description

Detect potential persistence via the creation of an excel add-in (XLL) file to make it run automatically when Excel is started.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Registry value modified" AND (OBJECTNAME contains "Software\Microsoft\Office" OR (OBJECTNAME endswith "Software\Microsoft\Office" AND isExist(OBJECTVALUENAME))) AND (OBJECTNAME endswith "\Excel\Options" OR (OBJECTNAME endswith "\Excel" AND OBJECTVALUENAME = "Options")) AND INFORMATION startswith "/R " AND INFORMATION endswith ".xll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113