# MAL-2026-13057: Malicious code in boxy-maker (npm)


- **Type:** Malicious package
- **Package:** `boxy-maker` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13057?

MAL-2026-13057 is a malicious package in boxy-maker, published on 5 Aug 2026. 

### Official description

On require() of the package, _bridge.js downloads a platform-specific binary from obfuscated Cloudflare workers.dev hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev), writes it to a disguised temp path (e.g. dotnet_diag_*.exe,.cache_*), chmods 0755 on non-Windows, and spawns it detached via /bin/sh -c or cmd. Destination hostnames are reassembled at runtime from split-string arrays (e.g. ['oob-worker.cf102','-baf.workers.d','ev'].join('')) to evade static scanners. If HTTPS fetch fails, _bridge.js falls back to a DNS TXT covert channel under wel1.ru subdomains (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru), reconstructing chunked base64-encoded payload bytes from TXT records, writing them to disk, and executing them. Cover-story framing (DISABLE_TELEMETRY env var, analytics_state, dotnet_diag_* file names) misrepresents the behavior as CDN telemetry. Installing or importing this package executes attacker-controlled bytes on the host.

## What should I do about MAL-2026-13057?

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-2026-13057 is a malicious package: boxy-maker (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-2026-13057/ (Markdown: https://insights.sbomify.com/MAL-2026-13057/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13057

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13057/
Summaries are generated and may contain mistakes; the official description above is the record.