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Malicious package

@hzero-front-ui/hzero-uinpm

Advisory published Updated

@hzero-front-ui/hzero-ui is a confirmed malicious npm package (MAL-2026-13970) 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/hzero-ui (npm)

MAL-2026-13970
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall @hzero-front-ui/hzero-ui

What this malware does

Package @hzero-front-ui/[email protected] is a scope-lookalike of @hzero-front/hzero-ui with a placeholder version, empty author, generic description, and a trivial index.js. Its package.json preinstall and install lifecycle scripts base64-encode $(whoami):$(hostname):$(pwd):$npm_package_name and send the encoded value to attacker-controlled subdomains of callback.m0chan.co.uk over both HTTPS (curl) and DNS (nslookup). This fires automatically on npm install, leaking the installer's OS username, hostname, current working directory, and the internal package name that resolved to this lure — the canonical dependency-confusion beacon shape.

Malicious versions

1 flagged
99.99.99

Indicators of compromise (SHA-256)

a1b33c04eb2fb12d521b76353993517475d9239c9790c085d16c0c3d0a4ba2f9

Detection & response playbook

Backdoor / remote access

  1. Find it

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

  2. If you installed it — respond

    @hzero-front-ui/hzero-ui 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/hzero-ui 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/hzero-ui 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-2026-017673

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks @hzero-front-ui/hzero-ui-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

All malware advisories How O3 detects malware Vulnerability database
@hzero-front-ui/hzero-ui (npm) malicious package — MAL-2026-13970 | O3 Security