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Detection rules › Sigma

JexBoss Command Sequence

Status
test
Severity
high
Log source
product linux
Author
Florian Roth (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects suspicious command sequence that JexBoss

MITRE ATT&CK coverage

TacticTechniques
Execution

Rule body

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

Stages and Predicates

Stage 0: condition

keywords

Stage 1: keywords

keywords:
    '|all':
        - 'bash -c /bin/bash'
        - '&/dev/tcp/'