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Malicious package

nobiztoblut-botnpm

Advisory published Updated

nobiztoblut-bot is a confirmed malicious npm package (MAL-2026-18995) that executes malicious code on install (malicious versions 1.2.3, 1.2.4). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in nobiztoblut-bot (npm)

MAL-2026-18995
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall nobiztoblut-bot

What this malware does

nobiztoblut-bot is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query for the channel ID(s) 120363400738305381@newsletter, 120363420757607688@newsletter, 120363423837510800@newsletter, 120363425000320171@newsletter (stored as base64 strings), using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).

Malicious versions

2 flagged
1.2.31.2.4

Detection & response playbook

Malicious package
  1. Find it

    Search your lockfiles and build artifacts for nobiztoblut-bot (2 malicious versions).

  2. If you installed it — respond

    Remove nobiztoblut-bot from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

  3. Did it already run?

    If nobiztoblut-bot 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. nobiztoblut-bot on npm has been identified as a malicious package (versions 1.2.3, 1.2.4 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

References

Credits

  • CyberXYZ · finder

Detect & block this

O3 blocks nobiztoblut-bot-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Explore

nobiztoblut-bot (npm) malicious package — MAL-2026-18995 | O3 Security