Malicious code in @antv/dw-transform (npm)
The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/dw-transform. Each version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials via GitHub API and establishes persistence through CI/CD workflow injection and system daemons.
- Disclosed
- Last updated
- Blast radius
- 631 malicious versions across 314 npm packages; widespread credential exfiltration affecting AWS, GitHub, npm, GCP, Azure, Kubernetes, SSH, Docker, databases, Stripe, and Slack
- Attack vectors
- Threat actor
- Affected entities
- @antv/dw-transformMalicious 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/dw-transform 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 confirmed by both Amazon Inspector and Google Open Source Security sources.
Indicators of compromise
- Packages
- @antv/dw-transform
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/dw-transform and other affected packages from npm; use npm audit to identify installed malicious versions
- Review GitHub Actions workflows and CI/CD pipelines for unauthorized `Run Copilot` workflows or other suspicious modifications
- Check for and remove any `kitty-monitor` system daemons or other persistence mechanisms
- Inspect attacker-controlled repositories with Dune-themed names for exfiltrated data
- Update to patched versions of affected packages once available
- Implement stricter npm account security controls and monitor for unauthorized package publications
Sources
- GitHub Advisory GHSA-hch4-xprx-2mx2 · GitHub Advisory Database
Cite this entry
"Malicious code in @antv/dw-transform (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-dw-transform-npm-h91alh
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