# MAL-2026-13079: Malicious code in boxy-scroll-providers (npm)


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

## What is MAL-2026-13079?

MAL-2026-13079 is a malicious package in boxy-scroll-providers, published on 5 Aug 2026. 

### Official description

On require() of boxy-scroll-providers, index.js loads _bootstrap.js which selects an OS-specific endpoint, downloads an opaque binary from obfuscated Cloudflare Workers hosts (oob-worker.cf10{0,1,2,3}-*.workers.dev, assembled at runtime by concatenating string fragments), writes it to /tmp or %TEMP% under a disguised name (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start. When HTTPS retrieval fails, _bootstrap.js falls back to a DNS TXT-record covert channel: it queries c.<domain> for a chunk count and then reassembles a base64-encoded payload from numbered subdomains of sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. A state file throttles re-execution across installs. Destination hostnames and file names are obfuscated to evade static inspection.

## What should I do about MAL-2026-13079?

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-2026-13079 is a malicious package: boxy-scroll-providers (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-2026-13079/ (Markdown: https://insights.sbomify.com/MAL-2026-13079/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13079

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13079/
Summaries are generated and may contain mistakes; the official description above is the record.