@galicia-toolkit-cheques-nc/frontnpm
Advisory published Updated
@galicia-toolkit-cheques-nc/front is a confirmed malicious npm package (MAL-2026-17720) that steals credentials and exfiltrates sensitive data (malicious versions 999.0.1, 999.0.2, 999.0.3). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in @galicia-toolkit-cheques-nc/front (npm)
What this malware does
@galicia-toolkit-cheques-nc/front is a dependency confusion package published to npm on 2026-10-09 by the account s4yhii__, targeting the internal @galicia-toolkit-* / @brick-v2 package namespaces with inflated versions (e.g. 999.0.x). Early versions resolve <hostname>.<tag>.dc.oob.s4yhii.com via DNS to beacon the victim's hostname. Later versions run node index.js from a preinstall hook, which loads a bundled native addon (prebuilds/<platform>-<arch>/metrics.node, Linux and Windows builds). The addon forks a detached process that collects hostname, username, OS/arch, cwd and the full values of CI/cloud secrets from environment variables (NPM_TOKEN, NODE_AUTH_TOKEN, GITHUB_TOKEN, ACTIONS_RUNTIME_TOKEN, ACTIONS_ID_TOKEN_REQUEST_TOKEN, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, SYSTEM_ACCESSTOKEN, AZURE_DEVOPS_EXT_PAT and others) and sends them as JSON via HTTP POST /native to oob.s4yhii.com:9999.
Scoped npm package @galicia-toolkit-cheques-nc/front published at version 999.0.3 with UNLICENSED, no README, and no repository. package.json declares a preinstall hook node index.js || true, which loads a platform-specific prebuilt native addon at prebuilds/<platform>-<arch>/metrics.node. The shipped Linux ELF and Windows PE binaries contain hardcoded references to CI/CD credential environment variables (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, GITHUB_TOKEN, NPM_TOKEN, NODE_AUTH_TOKEN, ACTIONS_RUNTIME_TOKEN, ACTIONS_ID_TOKEN_REQUEST_TOKEN, AZURE_DEVOPS_EXT_PAT, SYSTEM_ACCESSTOKEN) and POST their values together with host identifiers as JSON to the hardcoded non-publisher endpoint oob.s4yhii.com /native. The Linux binary additionally imports fork, setsid, socket, connect, and send, daemonizing a background process that maintains outbound contact to the same host; the Windows binary uses the equivalent WSAStartup/getaddrinfo/connect sequence. No native source, binding.gyp, or build script is shipped, so the opaque binary is not reproducible from the tarball. The scoped name and 999.0.3 version shape are consistent with a dependency-confusion attack targeting an internal corporate scope so that public resolution of this artifact triggers the preinstall exfiltration.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for @galicia-toolkit-cheques-nc/front (3 malicious versions).
If you installed it — respond
@galicia-toolkit-cheques-nc/front is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If @galicia-toolkit-cheques-nc/front 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
- SafeDep · finder
Detect & block this
O3 blocks @galicia-toolkit-cheques-nc/front-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.