Malicious code in @antv/x6-react (npm)
The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/x6-react, each injecting a preinstall hook that executes an obfuscated Bun script to exfiltrate credentials via GitHub API. The attack also establishes persistence through 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
- Ecosystems
- Attack vectors
- Threat actor
- Affected entities
- @antv/x6-reactMalicious preinstall hook injected; part of Mini Shai-Hulud campaign
A threat actor compromised the npm account atool and launched an automated attack publishing 631 malicious versions across 314 npm packages in a 22-minute burst, part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/x6-react package was among those modified to include a malicious preinstall hook.
Each malicious version executes a 498KB obfuscated Bun script that exfiltrates 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. The stolen data is sent to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).
Beyond the preinstall hook, the attack establishes persistence through 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. The campaign has been attributed to the TeamPCP threat actor and is described as an ongoing worm variant.
Indicators of compromise
- Packages
- @antv/x6-react
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/x6-react and other affected packages from npm; verify package integrity before reinstalling
- Inspect CI/CD workflows and GitHub Actions for unauthorized `Run Copilot` workflows or other suspicious automation
- Check systems for the `kitty-monitor` daemon and remove if present
- Review npm account security for the `atool` account and all related accounts; enable MFA and audit access logs
- Scan development and production environments for signs of the obfuscated Bun payload execution
- Monitor for exfiltration of credentials to attacker-controlled repositories with Dune-themed names
Sources
- GitHub Advisory GHSA-j8fq-5683-72xr · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/x6-react (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-x6-react-npm-15440e
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