sigmahighHunting

Suspicious DumpMinitool Execution

Detects suspicious ways to use the "DumpMinitool.exe" binary

MITRE ATT&CK

defense-evasioncredential-access

Detection Query

selection:
  - Image|endswith:
      - \DumpMinitool.exe
      - \DumpMinitool.x86.exe
      - \DumpMinitool.arm64.exe
  - OriginalFileName:
      - DumpMinitool.exe
      - DumpMinitool.x86.exe
      - DumpMinitool.arm64.exe
filter_folder:
  Image|contains:
    - \Microsoft Visual Studio\
    - \Extensions\
susp_flags:
  CommandLine|contains: .txt
cmd_has_flags:
  CommandLine|contains:
    - " Full"
    - " Mini"
    - " WithHeap"
filter_cmd_misses_flags:
  CommandLine|contains: --dumpType
condition: selection and ( ( not filter_folder ) or susp_flags or (
  cmd_has_flags and not filter_cmd_misses_flags ) )

Author

Florian Roth (Nextron Systems)

Created

2022-04-06

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.credential-accessattack.t1036attack.t1003.001

Raw Content

title: Suspicious DumpMinitool Execution
id: eb1c4225-1c23-4241-8dd4-051389fde4ce
status: test
description: Detects suspicious ways to use the "DumpMinitool.exe" binary
references:
    - https://twitter.com/mrd0x/status/1511415432888131586
    - https://twitter.com/mrd0x/status/1511489821247684615
    - https://lolbas-project.github.io/lolbas/OtherMSBinaries/DumpMinitool/
author: Florian Roth (Nextron Systems)
date: 2022-04-06
modified: 2023-04-12
tags:
    - attack.defense-evasion
    - attack.credential-access
    - attack.t1036
    - attack.t1003.001
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        - Image|endswith:
              - '\DumpMinitool.exe'
              - '\DumpMinitool.x86.exe'
              - '\DumpMinitool.arm64.exe'
        - OriginalFileName:
              - 'DumpMinitool.exe'
              - 'DumpMinitool.x86.exe'
              - 'DumpMinitool.arm64.exe'
    filter_folder:
        Image|contains:
            - '\Microsoft Visual Studio\'
            - '\Extensions\'  # https://github.com/microsoft/vstest/blob/b2e2126f1aa7e5753cafe9515563c99ade6a59ce/src/package/nuspec/Microsoft.TestPlatform.Portable.nuspec#L159
    susp_flags:
        CommandLine|contains: '.txt'
    cmd_has_flags:
        CommandLine|contains:
            - ' Full'
            - ' Mini'
            - ' WithHeap'
    filter_cmd_misses_flags:
        CommandLine|contains: '--dumpType'
    condition: selection and ( ( not filter_folder ) or susp_flags or ( cmd_has_flags and not filter_cmd_misses_flags ) )
falsepositives:
    - Unknown
level: high