Malicious code in @antv/f2-wx (npm)
The npm account 'atool' was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/f2-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 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/f2-wxMalicious preinstall hook injected
A threat actor compromised the npm account atool and published 631 malicious versions across 314 npm packages in an automated 22-minute burst as part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/f2-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 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 identified by Amazon Inspector and Google Open Source Security, with attribution to the TeamPCP threat actor.
Indicators of compromise
- Packages
- @antv/f2-wx
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; do not install or update to any version published during the 22-minute attack window
- Inspect CI/CD workflows and GitHub Actions for the injected `Run Copilot` 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
- Implement package signature verification and use npm audit to detect compromised dependencies
- Monitor for unauthorized access to systems that may have had the malicious preinstall hook executed
Sources
- GitHub Advisory GHSA-x7rx-wj54-59xp · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/f2-wx (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-f2-wx-npm-a77sgm
Suggest a correction
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