Possible Screen Capture with Import Utility (via auditd)

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

SigmalowLinuxv1
sigma
title: Possible Screen Capture with Import Utility (via auditd)
id: 1d2f0835-743f-54cc-8622-7795382f68d7
status: stable
description: This rule detects adversary creating screen capture of a desktop with Import Tool. Highly recommended using rule on servers, due to high use of screenshot utilities on user workstations. ImageMagick must be installed.
references:
    - https://attack.mitre.org/techniques/T1113/
    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1113/T1113.md
    - https://linux.die.net/man/1/import
    - https://imagemagick.org/
author: 'Huntrule Team'
date: 2026-04-26
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:
    - Unknown
level: low

Known false positives

  • Unknown

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.