Malicious code in @antv/f-charts (npm)
The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/f-charts, 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.
- 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
- Attack vectors
- Threat actor
- Affected entities
- @antv/f-chartsMalicious 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/f-charts 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 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 code establishes 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.
Indicators of compromise
- Packages
- @antv/f-charts
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 @antv/f-charts and other affected packages from npm; do not install or update to any version published during the attack window
- Scan all systems and CI/CD pipelines for the `kitty-monitor` daemon and `Run Copilot` GitHub Actions workflow; remove if found
- Review git commit history in attacker-controlled repositories (Dune-themed naming patterns) for exfiltrated data
- Implement package pinning and integrity verification for npm dependencies
- Enable 2FA on npm and GitHub accounts; audit account access logs for unauthorized activity
Sources
- GitHub Advisory GHSA-9jv6-fjwr-9m23 · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/f-charts (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-f-charts-npm-115v7y
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