Creation Of Non-Existent System DLL
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of system DLLs that are usually not present on the system (or at least not in system directories). Usually this technique is used to achieve DLL hijacking.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND FILENAME endswith ":\Windows\System32\TSMSISrv.dll,:\Windows\System32\TSVIPSrv.dll,:\Windows\System32\wbem\wbemcomn.dll,:\Windows\System32\WLBSCTRL.dll,:\Windows\System32\wow64log.dll,:\Windows\System32\WptsExtensions.dll,\SprintCSP.dll" OR OBJECTNAME endswith ":\Windows\System32\TSMSISrv.dll,:\Windows\System32\TSVIPSrv.dll,:\Windows\System32\wbem\wbemcomn.dll,:\Windows\System32\WLBSCTRL.dll,:\Windows\System32\wow64log.dll,:\Windows\System32\WptsExtensions.dll,\SprintCSP.dll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems), fornotes
