Sigma medium experimental sigma

TanStack Supply-Chain Attack File Creation Indicators - Linux

Detects file creation 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.

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Detection Logic

{
  "selection_malware_files": {
    "TargetFilename
| endswith": [
      "/router_init.js",
      "/tanstack_runner.js"
    ]
  },
  "selection_persistence_claude_vscode": {
    "TargetFilename
| endswith": [
      "/.claude/router_runtime.js",
      "/.vscode/router_runtime.js"
    ]
  },
  "selection_pypi_payload": {
    "TargetFilename": "/tmp/transformers.pyz"
  },
  "condition": "1 of selection_*"
}

False Positives

  • ⚠ Unknown

Field Validations

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