xzvbailsxnpm
xzvbailsx is a confirmed malicious npm package (MAL-2026-16279) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in xzvbailsx (npm)
What this malware does
package.json declares the dependency libsignal with source github:tenka-san/libsignal-node, an unpinned GitHub ref with no commit SHA, tag, or integrity hash. On npm install, npm fetches whatever HEAD of that repository currently points at and executes any lifecycle scripts (preinstall/install/postinstall) it contains on the installer's machine. The referenced GitHub account is a personal repository unrelated to the WhiskeySockets/Baileys upstream that this package forks. Provenance is further obscured by an identity mismatch: the package is published as xzvbailsx but README/examples describe it as @XzV-RxVz/xbails, and the repository field points to Telegram handles (t.me/JustRxVz, t.me/XzV_ExpzC) rather than a source repository.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Malicious packageFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for xzvbailsx (version 1.0.0). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging xzvbailsx across your stack and pipelines.
If you installed it — respond
Remove xzvbailsx 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.
Did it already run?
If xzvbailsx 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.
How O3 protects you
O3 blocks xzvbailsx 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks xzvbailsx-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.