Potential Persistence Via Excel Add-in - Registry
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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,Action1.USERNAME,Action1.DOMAIN,Action1.NEWTYPE,Action1.OBJECTVALUENAME,Action1.OLDTYPE
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
