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containedcritical

Malicious code in @antv/x6-vector (npm)

A threat actor compromised the npm account `atool` and published 631 malicious versions across 314 npm packages, including @antv/x6-vector, as part of the "Mini Shai-Hulud" supply chain attack campaign. Each malicious version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials and establishes persistence via CI/CD workflow injection 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
Account takeoverCompromised package
Threat actor
Mini Shai HuludTeamPCP
Affected entities
  • @antv/x6-vectorMalicious preinstall hook injected

The npm account atool was compromised and used to publish 631 malicious versions across 314 npm packages in an automated 22-minute burst. This incident is part of the "Mini Shai-Hulud" supply chain attack campaign attributed to the TeamPCP threat actor.

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 steals a broad range of credentials including 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. Stolen credentials are committed to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).

The malicious packages establish persistence through multiple mechanisms: 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 @antv/x6-vector package was specifically modified to include the malicious preinstall hook.

Indicators of compromise

Packages
  • @antv/x6-vector

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 versions of @antv/x6-vector and other affected packages from production environments
  • Scan CI/CD systems for the `Run Copilot` GitHub Actions workflow and remove any injected workflows
  • Search systems for the `kitty-monitor` daemon and remove it
  • Review git commit history for suspicious commits to attacker-controlled repositories with Dune-themed names
  • Implement package pinning and integrity verification for npm dependencies
  • Monitor for any unauthorized access or activity using the stolen credentials

Sources

  1. GitHub Advisory GHSA-6h7h-5qx3-fvxp · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/x6-vector (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 27, 2026; last updated July 28, 2026. https://supplychainattack.org/incident/malicious-code-in-antv-x6-vector-npm-1ur3j0

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