Skip to content
supplychainattack.orgSupply chain attack incident catalog
containedcritical

Malicious code in @antv/f2-algorithm (npm)

The npm account `atool` was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/f2-algorithm, in a coordinated 22-minute attack. 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.

ShareXLinkedInHacker News
Disclosed
Last updated
Blast radius
631 malicious versions across 314 npm packages; affects all users who installed affected versions
Ecosystems
npmOther
Attack vectors
Account takeoverCompromised packageMalicious commit
Threat actor
Mini Shai Hulud
Affected entities
  • @antv/f2-algorithmnpm package compromised with malicious preinstall hook

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/f2-algorithm 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.

Beyond credential theft, the malicious code establishes persistence through multiple mechanisms: 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 attack was confirmed by both Amazon Inspector and Google Open Source Security sources.

Indicators of compromise

Packages
  • @antv/f2-algorithm

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 @antv/f2-algorithm and other affected packages from your dependency tree
  • Inspect CI/CD workflows for unauthorized `Run Copilot` workflows or other suspicious GitHub Actions
  • Check system processes for the `kitty-monitor` daemon and remove if present
  • Review git commit history for unexpected commits to attacker-controlled repositories
  • Update npm account credentials and enable multi-factor authentication
  • Scan systems for the obfuscated Bun payload and remove any instances
  • Monitor for unauthorized access to systems and services using stolen credentials

Sources

  1. GitHub Advisory GHSA-f7g5-9cgp-6878 · GitHub Advisory Database

Cite this entry

"Malicious code in @antv/f2-algorithm (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-algorithm-npm-1v8b7e

Suggest a correction

Found an error or have a newer source? Corrections to factual errors take priority over new entries.

Related incidents

  1. containedcritical

    Malicious code in @antv/f-wx (npm)

    The npm account `atool` was compromised and used to publish 631 malicious versions across 314 packages, including @antv/f-wx. Each version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials via the GitHub API and establishes persistence through CI/CD workflow injection and system daemons.

    Mini Shai HuludTeamPCPnpmOtherAccount takeoverCompromised packageMalicious commit
  2. containedcritical

    Malicious code in @antv/g-web-components (npm)

    A threat actor compromised the npm account 'atool' and published 631 malicious versions across 314 npm packages in a 22-minute automated burst, including @antv/g-web-components. 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.

    Mini Shai HuludnpmOtherAccount takeoverCompromised packageMalicious commit
  3. containedcritical

    Malicious code in @antv/dipper-hooks (npm)

    The npm account `atool` was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/dipper-hooks, in an automated 22-minute burst. Each malicious version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials (AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes tokens, SSH keys, Docker configs, database strings, Stripe keys, Slack tokens) via the GitHub API and establishes persistence through CI/CD workflow injection and system daemons.

    Mini Shai HuludnpmOtherAccount takeoverCompromised packageMalicious commit
  4. containedcritical

    Malicious code in @antv/g-plugin-physx (npm)

    The npm account `atool` was compromised and used to publish 631 malicious versions across 314 npm packages, including @antv/g-plugin-physx, in an automated 22-minute burst. Each malicious version injects a preinstall hook executing an obfuscated Bun script that exfiltrates credentials (AWS keys, GitHub PATs, npm tokens, GCP service accounts, Azure credentials, Kubernetes tokens, SSH keys, Docker configs, database strings, Stripe keys, Slack tokens) via the GitHub API and establishes persistence through CI/CD workflow injection and system daemons.

    Mini Shai HuludnpmOtherAccount takeoverCompromised packageMalicious commit