@hzero-front-ui/cfgnpm
Advisory published Updated
@hzero-front-ui/cfg is a confirmed malicious npm package (MAL-2026-13968) 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/cfg (npm)
What this malware does
package.json declares preinstall and install lifecycle scripts that, on npm install, collect whoami, hostname, current working directory, and npm_package_name, base64-encode the concatenation, and transmit it to subdomains of callback.m0chan.co.uk via both an HTTPS GET (curl to https://<sub>.callback.m0chan.co.uk/<b64>) and a DNS lookup (nslookup against <pkgdns>.<sub>.callback.m0chan.co.uk). The 99.99.99 version and scoped name pattern are consistent with a dependency-confusion beacon targeting an internal @hzero-front-ui scope.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Backdoor / remote accessFind it
Search your lockfiles and build artifacts for @hzero-front-ui/cfg (version 99.99.99).
If you installed it — respond
@hzero-front-ui/cfg 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.
Did it already run?
If @hzero-front-ui/cfg 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
Campaign
References
Credits
- Amazon Inspector · finder
Detect & block this
O3 blocks @hzero-front-ui/cfg-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the C2 callback and severs the channel.