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containedcritical

Malicious code in @antv/react-g (npm)

The npm account 'atool' was compromised and used to publish 631 malicious versions across 314 packages, including @antv/react-g, in a 22-minute automated burst. Each 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
Threat actor
Mini Shai HuludTeamPCP
Affected entities
  • @antv/react-gMalicious preinstall hook injected; part of Mini Shai-Hulud campaign

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/react-g 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 attributed to the TeamPCP threat actor and detected by Amazon Inspector and Google Open Source Security.

The campaign represents a large-scale, automated supply chain attack targeting developers and organizations using affected npm packages.

Indicators of compromise

Packages
  • @antv/react-g

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 your dependency tree and update to patched versions
  • Scan CI/CD workflows for the injected 'Run Copilot' GitHub Actions workflow and remove it
  • 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
  • Monitor for unauthorized access to cloud accounts, repositories, and services using stolen credentials
  • Implement package signature verification and use npm audit to detect compromised dependencies
  • Consider using a private npm registry or package allowlist to prevent installation of malicious versions

Sources

  1. GitHub Advisory GHSA-j2fw-8r3j-fg22 · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/react-g (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-react-g-npm-1roakp

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