Potential Credential Dumping Via LSASS SilentProcessExit Technique

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About the rule

Rule Type

Standard

Rule Description

Detects changes to the Registry in which a monitor program gets registered to dump the memory of the lsass.exe process

Severity

Critical

Rule Requirement

Criteria

Action1: actionname = "Registry Event" AND OBJECTNAME contains "Microsoft\Windows NT\CurrentVersion\SilentProcessExit\lsass.exe" OR (OBJECTNAME endswith "Microsoft\Windows NT\CurrentVersion\SilentProcessExit" AND OBJECTVALUENAME startswith "lsass.exe") 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)