RdrLeakDiag.exe Memory Dump (Sysmon)

id: '32860.58327'
title: RdrLeakDiag.exe Memory Dump
description: rdrleakdiag.exe is a Windows diagnostic tool used to detect and analyze
  memory leaks. Threat actors may abuse rdrleakdiag.exe to create memory dumps on
  a system, potentially extracting sensitive information such as credentials or encryption
  keys. Sophos reported use of this technique in their Crimson Palace investigation
  targeting LSASS for credential dumping. This use case detects memory dump commands
  using rdrleakdiag.exe, accounting for instances where the binary has been renamed.
  Living Off the Land Binary and Scripts (LOLBAS) (LOLBIN)
logic_format: Splunk
logic: '`get_endpoint_data` `get_endpoint_data_sysmon` (TERM(EventCode=1) OR "<EventID>1<")
  (("/fullmemdmp" OR "/memdmp" OR "-memdmp") ("-o" OR "/o") AND ("-p" OR "/p")) OR
  ((TERM(rdrleakdiag) OR "RdrLeakDiag.exe") ("fullmemdmp" OR "/memdmp" OR "-memdmp"))
  | table _time, host, user, process, process_*, parent_* | bin span=1s | stats values(*)
  as * by _time, host '
techniques:
- credential-access:os credential dumping:lsass memory
technique_id:
- T1003.001
data_category:
- Windows Sysmon
references:
- https://attack.mitre.org/techniques/T1003/001/
- https://lolbas-project.github.io/lolbas/Binaries/Rdrleakdiag/
- https://news.sophos.com/en-us/2024/06/05/operation-crimson-palace-a-technical-deep-dive/
- https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/rules/windows/process_creation/proc_creation_win_rdrleakdiag_process_dumping.yml
- https://github.com/SigmaHQ/sigma/blob/6312dd1d44d309608552105c334948f793e89f48/deprecated/windows/proc_creation_win_lolbin_rdrleakdiag.yml
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1003.001/T1003.001.md#atomic-test-13---dump-lsassexe-using-lolbin-rdrleakdiagexe