Shai-Hulud Malware Indicators - Linux

Description

Detects potential Shai-Hulud malware indicators based on specific command line arguments associated with its execution.

Query · sigma

selection:
  CommandLine|contains:
  - Shai-Hulud
  - SHA1HULUD
condition: selection

Known false positives

  • Legitimate software containing similar strings
Raw source Shai-Hulud Malware Indicators - Linux · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Shai-Hulud Malware Indicators - Linux
id: 11bb9b26-4179-4a06-afcb-1ec31fce1627
related:
    - id: 540703fb-a874-4385-a9d6-7cd1bfab268c
      type: similar
    - id: 8f2a9c3b-7e5d-4f1a-9b8e-2c4d6a8f9e1b
      type: similar
status: experimental
description: |
    Detects potential Shai-Hulud malware indicators based on specific command line arguments associated with its execution.
references:
    - https://www.wiz.io/blog/shai-hulud-2-0-ongoing-supply-chain-attack
    - https://www.aikido.dev/blog/shai-hulud-strikes-again-hitting-zapier-ensdomains
    - https://semgrep.dev/blog/2025/digging-for-secrets-sha1-hulud-the-second-coming-of-the-npm-worm/
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-11-25
tags:
    - attack.execution
    - attack.t1059
    - detection.emerging-threats
logsource:
    category: process_creation
    product: linux
detection:
    selection:
        CommandLine|contains:
            - 'Shai-Hulud'
            - 'SHA1HULUD'
    condition: selection
falsepositives:
    - Legitimate software containing similar strings
level: high

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