# MAL-2026-17719: Malicious code in @brick-v2/tour (npm)


- **Type:** Malicious package
- **Package:** `@brick-v2/tour` (npm)
- **Published:** 9 Oct 2026

## What is MAL-2026-17719?

MAL-2026-17719 is a malicious package in @brick-v2/tour, published on 9 Oct 2026. 

### Official description

@brick-v2/tour 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.

The package presents itself as an Angular-style module exposing forRoot/createLogger stubs and a version field, but these exports are no-ops. The real behavior is in a bundled prebuilt native addon at prebuilds/linux-x64/metrics.node and prebuilds/win32-x64/metrics.node. package.json declares `"preinstall": "node index.js || true"`, and index.js loads the platform-specific metrics.node via `require(path.join(__dirname,'prebuilds', os.platform()+'-'+os.arch(),'metrics.node'))`, so the native addon is executed automatically on `npm install` and again on `require()`. The native binary reads a broad set of credential-grade environment variables and host identifiers — AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN, GITHUB_TOKEN, ACTIONS_RUNTIME_TOKEN, ACTIONS_ID_TOKEN_REQUEST_TOKEN, SYSTEM_ACCESSTOKEN, NPM_TOKEN, NODE_AUTH_TOKEN, AZURE_DEVOPS_EXT_PAT, plus hostname, username, cwd, OS and arch — and POSTs them as JSON (template `{"src":"native","pkg":"%s",...}`) to `oob.s4yhii.com` at path `/native` over HTTP/1.0. The `|| true` in the preinstall hook suppresses errors so the install appears to succeed silently. The Angular-shaped JS wrapper, the generic `tour` package name, and the `metrics.node` filename function as a cover story disguising a credential stealer.

## What should I do about MAL-2026-17719?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-17719 is a malicious package: @brick-v2/tour (npm). Every version was published to cause harm.

Task:
1. Search this repository's dependency manifests and lockfiles for the package, including transitive dependencies.
2. If it is present, remove it, regenerate the lockfile with the project's package manager, and replace whatever it was used for.
3. List any CI runners, developer machines or containers that installed it, so their secrets can be rotated.
4. If the package is not used anywhere, say so and change nothing.

Reference: https://insights.sbomify.com/MAL-2026-17719/ (Markdown: https://insights.sbomify.com/MAL-2026-17719/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-17719

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-17719/
Summaries are generated and may contain mistakes; the official description above is the record.