DLL Load via LSASS
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About the rule
Rule Type
Standard
Rule Description
Detects a method to load DLL via LSASS process using an undocumented Registry key
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry Event" AND (OBJECTNAME contains "\CurrentControlSet\Services\NTDS\DirectoryServiceExtPt,\CurrentControlSet\Services\NTDS\LsaDbExtPt" OR ((OBJECTNAME endswith "\CurrentControlSet\Services\NTDS" AND OBJECTVALUENAME startswith "DirectoryServiceExtPt") OR (OBJECTNAME endswith "\CurrentControlSet\Services\NTDS" AND OBJECTVALUENAME startswith "LsaDbExtPt"))) AND (PROCESSNAME != "C:\Windows\system32\lsass.exe" OR INFORMATION != "%%systemroot%%\system32\ntdsa.dll,%%systemroot%%\system32\lsadb.dll") select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.OBJECTNAME,Action1.OBJECTVALUENAME,Action1.ACCESSES,Action1.USERNAME,Action1.DOMAIN,Action1.PREVVAL,Action1.CHANGES,Action1.INFORMATION
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
