Interactive Bash Suspicious Children (via process_creation)

title: Interactive Bash Suspicious Children (via process_creation)
id: aafaa2ab-5115-5ef3-97cd-0ca4f0d2887a
status: stable
description: This rule detects anomalous interactive bash as a parent to rather uncommon child processes
references:
    - https://attack.mitre.org/techniques/T1036/
    - https://attack.mitre.org/techniques/T1059/004/
    - Internal Research
author: Huntrule Team
date: 2026-04-04
tags:
    - attack.execution
    - attack.stealth
    - attack.t1059.004
    - attack.t1036
logsource:
    product: linux
    category: process_creation
detection:
    selection:
        ParentCommandLine: 'bash -i'
    anomaly1:
        CommandLine|contains:
            - '-c import '
            - 'base64'
            - 'pty.spawn'
    anomaly2:
        Image|endswith:
            - 'whoami'
            - 'iptables'
            - '/ncat'
            - '/nc'
            - '/netcat'
    condition: selection and 1 of anomaly*
falsepositives:
    - Unknown
level: medium