JexBoss Command Sequence — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: high. Source dates: 2017-08-24 / 2025-11-22.

{
  "product": "linux"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: de7dfb892c16ab14ec7368d27e8c17cb21da09ecb75cf9d66b9286237351648b

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: JexBoss Command Sequence
id: 8ec2c8b4-557a-4121-b87c-5dfb3a602fae
status: test
description: Detects suspicious command sequence that JexBoss
references:
    - https://www.us-cert.gov/ncas/analysis-reports/AR18-312A
author: Florian Roth (Nextron Systems)
date: 2017-08-24
modified: 2025-11-22
tags:
    - attack.execution
    - attack.t1059.004
logsource:
    product: linux
detection:
    keywords:
        '|all':
            - 'bash -c /bin/bash'
            - '&/dev/tcp/'
    condition: keywords
falsepositives:
    - Unknown
level: high

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://www.us-cert.gov/ncas/analysis-reports/AR18-312A