TanStack Supply-Chain Attack Execution Indicators - Linux

Description

Detects process execution indicators associated with the Mini Shai-Hulud supply-chain campaign targeting TanStack npm packages and others such as mistralai and uipath reported on early May 2026. The preinstall hook runs setup.mjs, which downloads a platform-specific Bun runtime.

Query · sigma

selection_bun_runner:
  Image|endswith: /bun
  CommandLine|contains|all:
  - bun
  - run
  - tanstack_runner.js
selection_pypi_payload:
  Image|contains: /python3
  CommandLine|contains: /tmp/transformers.pyz
condition: 1 of selection_*

Known false positives

  • Unlikely
Raw source TanStack Supply-Chain Attack Execution Indicators - Linux · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: TanStack Supply-Chain Attack Execution Indicators - Linux
id: 3c6f5e4a-8d0b-6abc-d9e2-4f7a6b8c9d0e
status: experimental
description: |
    Detects process execution indicators associated with the Mini Shai-Hulud supply-chain campaign targeting TanStack npm packages and others such as mistralai and uipath reported on early May 2026.
    The preinstall hook runs setup.mjs, which downloads a platform-specific Bun runtime.
references:
    - https://socket.dev/blog/tanstack-npm-packages-compromised-mini-shai-hulud-supply-chain-attack
    - https://socket.dev/supply-chain-attacks/mini-shai-hulud
    - https://safedep.io/mass-npm-supply-chain-attack-tanstack-mistral/
author: Leonardo Gasparini
date: 2026-05-12
tags:
    - attack.execution
    - attack.t1059.007
    - attack.t1059.006
    - attack.t1204.002
    - detection.emerging-threats
logsource:
    category: process_creation
    product: linux
detection:
    selection_bun_runner:
        Image|endswith: '/bun'
        CommandLine|contains|all:
            - 'bun'
            - 'run'
            - 'tanstack_runner.js'
    selection_pypi_payload:
        # observed on guardrails-ai@0.10.1 compromise
        Image|contains: '/python3'
        CommandLine|contains: '/tmp/transformers.pyz'
    condition: 1 of selection_*
falsepositives:
    - Unlikely
level: high

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