Possible Docker Container Enumeration Through Dockerenv Listing (via process_creation)

title: Possible Docker Container Enumeration Through Dockerenv Listing (via process_creation)
id: 3e2d2013-d699-577a-99b0-2f64e2ede514
status: stable
description: This rule detects listing or file reading of ".dockerenv" that can be a sing of potential container discovery
references:
    - https://attack.mitre.org/techniques/T1082/
    - https://blog.skyplabs.net/posts/container-detection/
    - https://stackoverflow.com/questions/20010199/how-to-determine-if-a-process-runs-inside-lxc-docker
tags:
    - attack.discovery
    - attack.t1082
author: Huntrule Team
date: 2026-04-02
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        Image|endswith:
            - '/cat'
            - '/dir'
            - '/find'
            - '/ls'
            - '/stat'
            - '/test'
            - 'grep'
        CommandLine|endswith: '.dockerenv'
    condition: selection
falsepositives:
    - Unknown
level: low