DumpMinitool Execution — Sigma Rule

Rule metadata and linked tags

Author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems). Source status: test; severity: medium. Source dates: 2022-04-06 / 2023-04-12.

{
  "category": "process_creation",
  "product": "windows"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: cf8cab2afc25cfefeddcbc450dd374a709145ee268e4f3132e362255eb60acfc

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: DumpMinitool Execution
id: dee0a7a3-f200-4112-a99b-952196d81e42
status: test
description: Detects the use of "DumpMinitool.exe" a tool that allows the dump of process memory via the use of the "MiniDumpWriteDump"
references:
    - https://twitter.com/mrd0x/status/1511415432888131586
    - https://twitter.com/mrd0x/status/1511489821247684615
    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/DumpMinitool/
    - https://gist.github.com/nasbench/6d58c3c125e2fa1b8f7a09754c1b087f
author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems)
date: 2022-04-06
modified: 2023-04-12
tags:
    - attack.stealth
    - attack.t1036
    - attack.t1003.001
    - attack.credential-access
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith:
              - '\DumpMinitool.exe'
              - '\DumpMinitool.x86.exe'
              - '\DumpMinitool.arm64.exe'
        - OriginalFileName:
              - 'DumpMinitool.exe'
              - 'DumpMinitool.x86.exe'
              - 'DumpMinitool.arm64.exe'
    selection_cli:
        CommandLine|contains:
            - ' Full'
            - ' Mini'
            - ' WithHeap'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://twitter.com/mrd0x/status/1511415432888131586
• https://twitter.com/mrd0x/status/1511489821247684615
• https://lolbas-project.github.io/lolbas/OtherMSBinaries/DumpMinitool/
• https://gist.github.com/nasbench/6d58c3c125e2fa1b8f7a09754c1b087f