proc_creation_lnx_exploit_cve_2024_3094_sshd_child_process.yml

title: Potential Exploitation of CVE-2024-3094 - Suspicious SSH Child Process
id: 9aa27839-e8ba-4d7a-ac1a-746c22c3d1e5
status: experimental
description: |
    Detects potentially suspicious child process of SSH process (sshd) with a specific execution user. This could be a sign of potential exploitation of CVE-2024-3094.
references:
    - https://github.com/amlweems/xzbot?tab=readme-ov-file#backdoor-demo
author: Arnim Rupp, Nasreddine Bencherchali, Thomas Patzke
date: 2024/04/01
modified: 2024/04/12
tags:
    - attack.execution
    - cve.2024.3094
logsource:
    category: process_creation
    product: linux
detection:
    selection_1:
        ParentImage|endswith: '/sshd'
        CommandLine|startswith:
            - 'bash -c'
            - 'sh -c'
        User: 'root'
    selection_2:
        ParentImage|endswith: '/sshd'
        Image|endswith: '/sshd'
        User: 'sshd'
        CommandLine|contains: 'root'
    condition: 1 of selection_*
falsepositives:
    - Administrative activity directly with root authentication might trigger selection_1 if it's unnecessarily prefixed with "sh -c" or "bash -c"
level: high