Malicious code in @antv/d3-interpolate (npm)
The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/d3-interpolate, as part of the "Mini Shai-Hulud" supply chain attack campaign. 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 exfiltration affecting users of affected packages
- Attack vectors
- Threat actor
- Affected entities
- @antv/d3-interpolateMalicious 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, part of the "Mini Shai-Hulud" supply chain attack campaign. The @antv/d3-interpolate package was among those affected.\n\nEach malicious version injects a preinstall hook that executes a 498KB obfuscated Bun script. The script uses the GitHub API as a covert exfiltration channel and commits stolen credentials to attacker-controlled repositories following Dune-themed naming patterns (e.g., harkonnen-melange-742).\n\nStolen data includes 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 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.\n\nThe incident was identified by multiple security sources including Amazon Inspector and Google Open Source Security.
Indicators of compromise
- Packages
- @antv/d3-interpolate
Remediation
- Immediately audit and 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 all malicious versions of affected packages from your dependency tree and update to patched versions
- Review GitHub Actions workflows and CI/CD configurations for unauthorized `Run Copilot` workflows or other suspicious modifications
- Check for and remove any `kitty-monitor` system daemons or other persistence mechanisms
- Audit git commit history and repositories for suspicious commits following Dune-themed naming patterns
- Implement package pinning and integrity verification for npm dependencies
- Enable GitHub organization-level security alerts and require approval for new workflows
- Monitor for unauthorized access to accounts and repositories that may have been compromised
Sources
- GitHub Advisory GHSA-6f69-4vpx-47xh · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/d3-interpolate (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-d3-interpolate-npm-1wnua0
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