Windows Process Execution of CreateMiniDump.exe (LSASS MiniDump)

title: Windows Process Execution of CreateMiniDump.exe (LSASS MiniDump)
id: 1f7667ae-ab40-469e-ad54-8f9011ec647a
status: test
description: This rule flags execution of CreateMiniDump.exe on Windows systems by matching the process image name and a specific IMPHASH. Attackers can use this tool to create a mini dump of the LSASS process to enable offline credential extraction. The detection relies on process creation telemetry containing the executable path and hashing details.
references:
  - https://ired.team/offensive-security/credential-access-and-credential-dumping/dumping-lsass-passwords-without-mimikatz-minidumpwritedump-av-signature-bypass
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_hktl_createminidump.yml
author: Florian Roth (Nextron Systems), Huntrule Team
date: 2019-12-22
modified: 2024-11-23
tags:
  - attack.credential-access
  - attack.t1003.001
logsource:
  category: process_creation
  product: windows
detection:
  selection:
    - Image|endswith: \CreateMiniDump.exe
    - Hashes|contains: IMPHASH=4a07f944a83e8a7c2525efa35dd30e2f
  condition: selection
falsepositives:
  - Unknown
level: high
license: DRL-1.1
related:
  - id: 36d88494-1d43-4dc0-b3fa-35c8fea0ca9d
    type: derived