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Malicious package

weywot-astrobiology-biomimicry-postcssnpm

Malicious code in weywot-astrobiology-biomimicry-postcss (npm) Remove it immediately and rotate any exposed credentials.

MAL-2025-190299
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall weywot-astrobiology-biomimicry-postcss

What this malware does

This package appears to be part of the tea.xyz token reward campaign that flooded npm. These packages typically contain autopublish scripts (auto.js, autopublish.js, autopublish2.js, autopublish3.js) designed to automatically generate and publish derivative packages with randomized names to inflate developer reputation scores for tea protocol token rewards. The malicious payload modifies package.json to remove private flags, changes version numbers, generates random Indonesian-themed package names (some variants are also in English), and continuously republishes variants to pollute the npm registry.

Malicious versions

all versions

Every published version of this package is considered malicious — remove it entirely.

Indicators of compromise (SHA-256)

33ab409a95035ca69c063d26818d399f9455f7783951de128b164c4b145ac392

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for weywot-astrobiology-biomimicry-postcss (all published versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging weywot-astrobiology-biomimicry-postcss across your stack and pipelines.

  2. If you installed it — respond

    weywot-astrobiology-biomimicry-postcss is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If weywot-astrobiology-biomimicry-postcss was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks weywot-astrobiology-biomimicry-postcss before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. weywot-astrobiology-biomimicry-postcss on npm has been identified as a malicious package (all published versions flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks weywot-astrobiology-biomimicry-postcss-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

weywot-astrobiology-biomimicry-postcss (npm) malicious package — MAL-2025-190299 | O3 Security