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containedcritical

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

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/l7-mapkit, 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 exfiltration affecting AWS, GitHub, npm, GCP, Azure, Kubernetes, SSH, Docker, databases, Stripe, and Slack
Ecosystems
npmOther
Attack vectors
Account takeoverCompromised packageMalicious commit
Affected entities
  • @antv/l7-mapkitCompromised as part of Mini Shai-Hulud campaign; malicious 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, part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/l7-mapkit 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. Stolen credentials are committed to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).

Beyond credential theft, the malicious packages establish persistence through multiple mechanisms: CI/CD workflow injection (a GitHub Actions workflow named Run Copilot dumps all secrets via toJSON(secrets)), AI agent session hooks, and a system daemon named kitty-monitor. The attack was detected by Amazon Inspector and Google Open Source Security.

Users of affected packages should immediately audit their environments for credential compromise and revoke exposed secrets.

Indicators of compromise

Packages
  • @antv/l7-mapkit

Remediation

  • Immediately revoke all AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes service account tokens, SSH keys, Docker auth configs, and API keys (Stripe, Slack) that may have been exposed
  • Remove all versions of @antv/l7-mapkit and other affected packages from production environments
  • Audit CI/CD workflows for unauthorized `Run Copilot` workflows or other suspicious GitHub Actions
  • Search systems for the `kitty-monitor` daemon and remove if present
  • Review git commit history for suspicious commits to attacker-controlled repositories with Dune-themed names
  • Upgrade to patched versions of affected packages once available from npm maintainers
  • Implement package pinning and integrity verification to prevent installation of malicious versions
  • Monitor for signs of credential misuse in AWS, GitHub, GCP, Azure, and other cloud accounts

Sources

  1. GitHub Advisory GHSA-27q6-j7gx-6f8c · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/l7-mapkit (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-l7-mapkit-npm-11huib

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