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Malicious package

beaver-ui-ai-chat-layoutnpm

Advisory published Updated

beaver-ui-ai-chat-layout is a confirmed malicious npm package (MAL-2026-12142) that steals credentials and exfiltrates sensitive data (malicious version 0.0.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in beaver-ui-ai-chat-layout (npm)

MAL-2026-12142
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall beaver-ui-ai-chat-layout

What this malware does

Package is advertised as a UI chat layout toolkit but its index.js unconditionally require()s a setup.js that side-loads a 77 KB module internally labelled 'Analytics SDK'. On require(), setup.js reads the installer's hostname, OS username, current working directory, Node.js version, and pid, derives a SHA-256 install fingerprint, and passes it to lib/telemetry.js, which issues https.request calls to an endpoint resolved at runtime via DNS-based service discovery rather than a hardcoded hostname. Sensitive OS APIs are accessed via runtime string concatenation (os'host'+'name', os'user'+'Info'.username, os'plat'+'form', os'ar'+'ch') to evade static detection. There is no opt-in; telemetry defaults on and is only disableable via an undocumented DISABLE_TELEMETRY env var. The package's declared purpose (UI layout) does not correspond to any behavior in the shipped code, which is limited to a trivial no-op class plus the fingerprint beacon.

Malicious versions

1 flagged
0.0.1

Indicators of compromise (SHA-256)

c18143c270ff7461d38c50147f24245f346aecf7cc07e4883590c9c677b13809

Detection & response playbook

Credential / info stealer

  1. Find it

    Search your lockfiles and build artifacts for beaver-ui-ai-chat-layout (version 0.0.1).

  2. If you installed it — respond

    beaver-ui-ai-chat-layout 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 beaver-ui-ai-chat-layout was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. beaver-ui-ai-chat-layout on npm has been identified as a malicious package (version 0.0.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-014470

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks beaver-ui-ai-chat-layout-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

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beaver-ui-ai-chat-layout (npm) malicious package — MAL-2026-12142 | O3 Security