sigmahighHunting

Potential Arbitrary Command Execution Using Msdt.EXE

Detects processes leveraging the "ms-msdt" handler or the "msdt.exe" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability

MITRE ATT&CK

T1202

defense-evasion

Detection Query

selection_img:
  - Image|endswith: \msdt.exe
  - OriginalFileName: msdt.exe
selection_cmd_inline:
  CommandLine|contains: IT_BrowseForFile=
selection_cmd_answerfile_flag:
  CommandLine|contains: " PCWDiagnostic"
selection_cmd_answerfile_param:
  CommandLine|contains|windash: " -af "
condition: selection_img and (selection_cmd_inline or all of selection_cmd_answerfile_*)

Author

Nasreddine Bencherchali (Nextron Systems)

Created

2022-05-29

Data Sources

windowsProcess Creation Events

Platforms

windows

References

Tags

attack.defense-evasionattack.t1202

Raw Content

title: Potential Arbitrary Command Execution Using Msdt.EXE
id: 258fc8ce-8352-443a-9120-8a11e4857fa5
status: test
description: Detects processes leveraging the "ms-msdt" handler or the "msdt.exe" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability
references:
    - https://twitter.com/nao_sec/status/1530196847679401984
    - https://app.any.run/tasks/713f05d2-fe78-4b9d-a744-f7c133e3fafb/
    - https://twitter.com/_JohnHammond/status/1531672601067675648
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-05-29
modified: 2024-03-13
tags:
    - attack.defense-evasion
    - attack.t1202
logsource:
    category: process_creation
    product: windows
detection:
    selection_img:
        - Image|endswith: '\msdt.exe'
        - OriginalFileName: 'msdt.exe'
    selection_cmd_inline:
        CommandLine|contains: 'IT_BrowseForFile='
    selection_cmd_answerfile_flag:
        CommandLine|contains: ' PCWDiagnostic'
    selection_cmd_answerfile_param:
        CommandLine|contains|windash: ' -af '
    condition: selection_img and (selection_cmd_inline or all of selection_cmd_answerfile_*)
falsepositives:
    - Unknown
level: high