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containedcritical

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

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/l7-pass, in an automated 22-minute burst. Each malicious version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials via the GitHub API and establishes persistence through 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
Affected entities
  • @antv/l7-passModified with malicious preinstall hook executing obfuscated Bun payload

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 a rapid 22-minute burst. The @antv/l7-pass package was among those compromised.

Each malicious version includes a preinstall hook that executes a 498KB obfuscated Bun script. This script uses the GitHub API as a covert exfiltration channel to steal sensitive 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 payload 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. The attack was attributed to the TeamPCP threat actor.

Indicators of compromise

Packages
  • @antv/l7-pass

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 and verify integrity of current versions
  • Scan systems for the `kitty-monitor` daemon and remove any unauthorized CI/CD workflows named `Run Copilot` or similar
  • Review GitHub Actions workflow logs and commit history for suspicious activity in repositories
  • Implement strict npm package verification and consider using npm audit to detect compromised dependencies
  • Monitor for unauthorized access to cloud services and revoke any suspicious API keys or service accounts

Sources

  1. GitHub Advisory GHSA-7qq6-7jfh-7996 · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/l7-pass (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-pass-npm-1mbegv

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