Malicious code in @antv/g-web-components (npm)
A threat actor compromised the npm account 'atool' and published 631 malicious versions across 314 npm packages in a 22-minute automated burst, including @antv/g-web-components. 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.
- 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
- Attack vectors
- Threat actor
- Affected entities
- @antv/g-web-componentsMalicious preinstall hook injected; part of Mini Shai-Hulud campaign
As part of the "Mini Shai-Hulud" supply chain attack campaign, a threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst. The @antv/g-web-components package was among those affected.
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.
Indicators of compromise
- Packages
- @antv/g-web-components
Remediation
- Immediately revoke all credentials (AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes tokens, SSH keys, Docker auth configs, database credentials, Stripe keys, Slack tokens) that may have been exposed
- Remove or downgrade @antv/g-web-components to a known-clean version prior to the malicious publication
- Audit npm package.json and lock files for any versions of @antv/g-web-components or other packages from the 314 affected packages published during the attack window
- Inspect GitHub Actions workflows for suspicious `Run Copilot` workflow or other unexpected workflows that may have been injected
- Check for and remove any system daemons named `kitty-monitor` or similar persistence mechanisms
- Review CI/CD logs and GitHub API access logs for unauthorized activity
- Regenerate all credentials and rotate authentication tokens across all affected systems
- Monitor attacker-controlled repositories with Dune-themed naming patterns for exfiltrated data
Sources
- GitHub Advisory GHSA-vv5x-8828-6xx2 · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/g-web-components (npm)." supplychainattack.org, Supply Chain Attack Incident Catalog. Disclosed July 26, 2026; last updated July 26, 2026. https://supplychainattack.org/incident/malicious-code-in-antv-g-web-components-npm-1py23w
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