MAL-2026-17715

Dashboard / Malicious Package / MAL-2026-17715

MAL-2026-17715

Summary: Malicious code in @brick-v2/core (npm)

Details: @brick-v2/core 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. Source: amazon-inspector (90c1fd9505ce4256620f9cb647e3a57a5af52539aa1e717a3eecb0485dec8c83) The package's main entry `index.js` loads a prebuilt native binary at `prebuilds/<platform>-<arch>/metrics.node` inside a top-level try/catch, executing native code within the Node process as soon as the module is required. The ELF binary reads credential-grade environment variables including AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, GITHUB_TOKEN, NPM_TOKEN, NODE_AUTH_TOKEN, SYSTEM_ACCESSTOKEN, ACTIONS_RUNTIME_TOKEN, and ACTIONS_ID_TOKEN_REQUEST_TOKEN, along with hostname, uid, and current working directory, and POSTs them as JSON to the hardcoded host `oob.s4yhii.com` via a raw socket (`POST /native HTTP/1.0`). The native code also invokes `fork`/`setsid` to detach from the parent process. The package is published as `@brick-v2/core` at version `999.0.1` with a trivial JS wrapper, a generic `core module` description, and `UNLICENSED` — a shape consistent with a dependency-confusion payload targeting a private `@brick-v2` scope so that npm resolution prefers this public version over an internal package.

References: https://www.npmjs.com/package/@brick-v2/core/v/999.0.2, https://www.npmjs.com/package/@brick-v2/core/v/999.0.1, https://www.npmjs.com/package/@brick-v2/core