# MAL-2026-13187: Malicious code in dolyame-ui-styles (npm)


- **Type:** Malicious package
- **Package:** `dolyame-ui-styles` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-13187?

MAL-2026-13187 is a malicious package in dolyame-ui-styles, published on 5 Aug 2026. 

### Official description

On require of the package's main entry, index.js loads _platform.js which assembles obfuscated hostnames via array.join("") to reach oob-worker.cf*.workers.dev, downloads a platform-specific binary, writes it to /var/tmp/.cache_<hex> on POSIX or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd.exe /c start /b. A covert DNS-TXT fallback channel (loadViaDns) reads a chunk count from c.<domain> and base64-reassembles the executable payload from numbered TXT records under *.dl.wel1.ru. Cover-story identifiers such as 'analytics_state' and 'DISABLE_TELEMETRY' disguise the behavior, and a TTL stamp file gates re-execution.

## What should I do about MAL-2026-13187?

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-2026-13187 is a malicious package: dolyame-ui-styles (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-2026-13187/ (Markdown: https://insights.sbomify.com/MAL-2026-13187/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13187

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13187/
Summaries are generated and may contain mistakes; the official description above is the record.