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containedcritical

Malicious code in @antv/g-webgpu-raytracer (npm)

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/g-webgpu-raytracer, in a 22-minute automated burst. Each version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials and establishes persistence via CI/CD workflows and system daemons.

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Disclosed
Last updated
Blast radius
631 malicious versions across 314 npm packages; widespread credential theft affecting AWS, GitHub, npm, GCP, Azure, Kubernetes, SSH, Docker, databases, Stripe, and Slack
Ecosystems
npm
Attack vectors
Compromised packageAccount takeover
Threat actor
Mini Shai Hulud
Affected entities
  • @antv/g-webgpu-raytracerMalicious preinstall hook injected

A threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst as part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/g-webgpu-raytracer package was among those affected.

Each malicious version injects a preinstall hook that executes a 498KB obfuscated Bun script. The script uses the GitHub API as a covert exfiltration channel and commits stolen credentials to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).

Stolen data includes AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes service account tokens, SSH keys, Docker auth configs, database connection strings, Stripe keys, and Slack tokens. The attack establishes persistence through CI/CD workflow injection (a GitHub Actions workflow named Run Copilot that dumps all secrets via toJSON(secrets)), AI agent session hooks, and a system daemon named kitty-monitor.

The incident was identified by both Amazon Inspector and Google Open Source Security sources.

Indicators of compromise

Packages
  • @antv/g-webgpu-raytracer

Remediation

  • Immediately audit and revoke all credentials (AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes tokens, SSH keys, Docker configs, database credentials, Stripe keys, Slack tokens) that may have been exposed
  • Remove all malicious versions of affected packages from npm; update to patched versions once available
  • Scan CI/CD systems for the `Run Copilot` GitHub Actions workflow and remove it
  • Search for and remove the `kitty-monitor` system daemon from affected systems
  • Review git commit history for suspicious commits to attacker-controlled repositories with Dune-themed names
  • Implement package signature verification and integrity checks in dependency management
  • Monitor for unauthorized access to compromised accounts and services

Sources

  1. GitHub Advisory GHSA-fhp2-qp3q-7jj4 · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/g-webgpu-raytracer (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 27, 2026; last updated July 27, 2026. https://supplychainattack.org/incident/malicious-code-in-antv-g-webgpu-raytracer-npm-6qpoh7

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