Detection: Windows OS Credential Dumping with Procdump

Description

Detect procdump.exe dumping the lsass process. This query looks for both -mm and -ma usage. -mm will produce a mini dump file and -ma will write a dump file with all process memory. Both are highly suspect and should be reviewed. This query does not monitor for the internal name (original_file_name=procdump) of the PE or look for procdump64.exe. Modify the query as needed. During triage, confirm this is procdump.exe executing. If it is the first time a Sysinternals utility has been ran, it is possible there will be a -accepteula on the command line. Review other endpoint data sources for cross process (injection) into lsass.exe.

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Implementation

To successfully implement this search, you need to be ingesting logs with the process name, parent process, and command-line executions from your endpoints. If you are using Sysmon, you must have at least version 6.0.4 of the Sysmon TA.

Known False Positives

None identified.

Associated Analytic Story

• Credential Dumping

• HAFNIUM Group

Risk Based Analytics (RBA)

References

• https://attack.mitre.org/techniques/T1003/001/

• https://docs.microsoft.com/en-us/sysinternals/downloads/procdump

• https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1003.001/T1003.001.md#atomic-test-2---dump-lsassexe-memory-using-procdump

• https://thedfirreport.com/2022/08/08/bumblebee-roasts-its-way-to-domain-admin/

Version: 5