LSASS Process Dump Artefact In CrashDumps Folder

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About the rule

Rule Type

Standard

Rule Description

Detects the presence of an LSASS dump file in the "CrashDumps" folder. This could be a sign of LSASS credential dumping. Techniques such as the LSASS Shtinkering have been seen abusing the Windows Error Reporting to dump said process.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND (FILENAME startswith "C:\Windows\System32\config\systemprofile\AppData\Local\CrashDumps" OR OBJECTNAME startswith "C:\Windows\System32\config\systemprofile\AppData\Local\CrashDumps") AND (FILENAME contains "lsass.exe." OR OBJECTNAME contains "lsass.exe.") AND (FILENAME endswith ".dmp" OR OBJECTNAME endswith ".dmp") select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

@pbssubhash