Clipboard Collection with Xclip Tool — Sigma Rule

Rule metadata and linked tags

Author: Pawel Mazur, Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC. Source status: test; severity: low. Source dates: 2021-10-15 / 2022-09-15.

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

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 0bf5c63d8a5e343064f4a6aedba5c7dab7c5ad6b8df0e1df4b268b5fbf802ec2

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: Clipboard Collection with Xclip Tool
id: ec127035-a636-4b9a-8555-0efd4e59f316
status: test
description: |
    Detects attempts to collect data stored in the clipboard from users with the usage of xclip tool. Xclip has to be installed.
    Highly recommended using rule on servers, due to high usage of clipboard utilities on user workstations.
references:
    - https://www.packetlabs.net/posts/clipboard-data-security/
author: Pawel Mazur, Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC
date: 2021-10-15
modified: 2022-09-15
tags:
    - attack.collection
    - attack.t1115
logsource:
    product: linux
    category: process_creation
detection:
    selection:
        Image|contains: 'xclip'
        CommandLine|contains|all:
            - '-sel'
            - 'clip'
            - '-o'
    condition: selection
falsepositives:
    - Legitimate usage of xclip tools.
level: low

Original YAML and metadata in JSON

False positives

• Legitimate usage of xclip tools.

Source references

• https://www.packetlabs.net/posts/clipboard-data-security/