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containedcritical

Malicious code in @antv/g6-wx (npm)

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/g6-wx, 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
Account takeoverCompromised package
Threat actor
Mini Shai HuludTeamPCP
Affected entities
  • @antv/g6-wxMalicious 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/g6-wx 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 versions 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 as part of the ongoing "Mini Shai-Hulud is back" worm campaign.

Indicators of compromise

Packages
  • @antv/g6-wx

Remediation

  • Immediately audit and rotate 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)
  • Remove all malicious versions of @antv/g6-wx and other affected packages from npm
  • Inspect CI/CD workflows for unauthorized `Run Copilot` workflow or other injected workflows and remove them
  • Check for and remove the `kitty-monitor` system daemon from affected systems
  • Review GitHub repositories for commits with Dune-themed names (e.g., `harkonnen-melange-742`) and investigate for exfiltrated data
  • Audit npm account `atool` and enforce account security measures (MFA, IP restrictions)
  • Monitor systems for signs of persistence mechanisms and unauthorized access
  • Update package.json to use only verified, clean versions of @antv/g6-wx and other affected packages

Sources

  1. GitHub Advisory GHSA-8p28-x8c7-79fq · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/g6-wx (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-g6-wx-npm-w3jala

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