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Screen Capture with Import Tool

Detects adversary creating screen capture of a desktop with Import Tool. Highly recommended using rule on servers, due to high usage of screenshot utilities on user workstations. ImageMagick must be installed.

MITRE ATT&CK

T1113

collection

Detection Query

import:
  type: EXECVE
  a0: import
import_window_root:
  a1: -window
  a2: root
  a3|endswith:
    - .png
    - .jpg
    - .jpeg
import_no_window_root:
  a1|endswith:
    - .png
    - .jpg
    - .jpeg
condition: import and (import_window_root or import_no_window_root)

Author

Pawel Mazur

Created

2021-09-21

Data Sources

linuxauditd

Platforms

linux

References

Tags

attack.collectionattack.t1113

Raw Content

title: Screen Capture with Import Tool
id: dbe4b9c5-c254-4258-9688-d6af0b7967fd
status: test
description: |
  Detects adversary creating screen capture of a desktop with Import Tool.
  Highly recommended using rule on servers, due to high usage of screenshot utilities on user workstations.
  ImageMagick must be installed.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md
    - https://linux.die.net/man/1/import
    - https://imagemagick.org/
author: 'Pawel Mazur'
date: 2021-09-21
modified: 2022-10-09
tags:
    - attack.collection
    - attack.t1113
logsource:
    product: linux
    service: auditd
detection:
    import:
        type: EXECVE
        a0: import
    import_window_root:
        a1: '-window'
        a2: 'root'
        a3|endswith:
            - '.png'
            - '.jpg'
            - '.jpeg'
    import_no_window_root:
        a1|endswith:
            - '.png'
            - '.jpg'
            - '.jpeg'
    condition: import and (import_window_root or import_no_window_root)
falsepositives:
    - Legitimate use of screenshot utility
level: low