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containedcritical

Malicious code in @antv/l7-mini (npm)

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/l7-mini, 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 HuludTeamPCP
Affected entities
  • @antv/l7-miniMalicious preinstall hook injected; part of broader campaign affecting 314 packages

A threat actor compromised the npm account atool and launched the "Mini Shai-Hulud" supply chain attack campaign, publishing 631 malicious versions across 314 npm packages in an automated 22-minute burst. The @antv/l7-mini package was among those compromised.

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 to steal 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.

Beyond credential theft, the malicious code establishes 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. Stolen credentials are committed to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).

The incident was identified by multiple security sources including Amazon Inspector and Google Open Source Security, with attribution to the TeamPCP threat actor.

Indicators of compromise

Packages
  • @antv/l7-mini

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/l7-mini and other affected packages from production environments
  • Scan CI/CD systems for injected GitHub Actions workflows named 'Run Copilot' or similar and remove them
  • Check 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 strict npm package verification and consider using npm audit, Snyk, or similar tools to detect malicious packages
  • Enable 2FA on npm and GitHub accounts to prevent account takeover
  • Monitor for any unauthorized access or data exfiltration attempts

Sources

  1. GitHub Advisory GHSA-q57x-w3gm-5vff · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/l7-mini (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-l7-mini-npm-1fhu0e

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