NIST deprecates RSA-2048 from 2030. Find every one of them before attackers do.
Malicious package

dct-dula-dev-baileysnpm

Advisory published Updated

dct-dula-dev-baileys is a confirmed malicious npm package (MAL-2026-18963) that executes malicious code on install (malicious versions 1.0.0, 1.0.1, 1.0.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in dct-dula-dev-baileys (npm)

MAL-2026-18963
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall dct-dula-dev-baileys

What this malware does

dct-dula-dev-baileys 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) 120363349457176430@newsletter, 120363400706010828@newsletter, 120363408629601473@newsletter, 120363421052027188@newsletter, 120363423257544642@newsletter (some 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

6 flagged
1.0.01.0.11.0.21.0.31.0.41.0.5

Detection & response playbook

Malicious package

  1. Find it

    Search your lockfiles and build artifacts for dct-dula-dev-baileys (6 malicious versions).

  2. If you installed it — respond

    Remove dct-dula-dev-baileys 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 dct-dula-dev-baileys 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. dct-dula-dev-baileys on npm has been identified as a malicious package (versions 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.0.5 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 dct-dula-dev-baileys-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.

Malware detection Runtime egress monitoring

Explore

All malware advisories How O3 detects malware Vulnerability database
dct-dula-dev-baileys (npm) malicious package — MAL-2026-18963 | O3 Security