Change the Fax Dll
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About the rule
Rule Type
Standard
Rule Description
Detect possible persistence using Fax DLL load when service restart
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND ((OBJECTNAME contains "\Software\Microsoft\Fax\Device Providers" AND OBJECTNAME contains "\ImageName") OR ((OBJECTNAME contains "\ImageName" OR OBJECTVALUENAME contains "\ImageName") OR (OBJECTNAME endswith "\Software\Microsoft\Fax\Device Providers" AND isExist(OBJECTVALUENAME)))) AND INFORMATION != "%systemroot%\system32\fxst30.dll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
