# MAL-2026-13566: Malicious code in dolyame-ui-deprecatepropshoc (npm)


- **Type:** Malicious package
- **Package:** `dolyame-ui-deprecatepropshoc` (npm)
- **Published:** 7 Aug 2026

## What is MAL-2026-13566?

MAL-2026-13566 is a malicious package in dolyame-ui-deprecatepropshoc, published on 7 Aug 2026. 

### Official description

On require(), dolyame-ui-deprecatepropshoc@35.8.1 side-effect-loads _adapter.js and lib/telemetry.js, which assemble Cloudflare Workers hostnames from split-string fragments (['oob-worker.cf101-adf.','wor','kers.dev'].join('')) with a DNS-TXT chunked-base64 fallback via *.dl.wel1.ru, fetch a platform-specific opaque binary (/pkg/package, /pkg/loader_mac, /pkg/package.exe), write it to /var/tmp/.cache_<uid> or %TEMP%\dotnet_diag_<uid>.exe, apply mode 0755 via fs['chmod'+'Sync'], and spawn it detached through /bin/sh -c or cmd.exe /c start /b. child_process is loaded via require('child_'+'process') to evade static matching. There is no version pin, hash, or signature verification on the fetched executable. The dropper is duplicated inside lib/telemetry.js — the module referenced by index.js's module.exports — so the payload deploys even if _adapter.js is removed. The 'telemetry'/'analytics_state'/'dotnet_diag_' naming is a cover story; the behavior is remote-code execution on the installer at require() time.

## What should I do about MAL-2026-13566?

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-2026-13566 is a malicious package: dolyame-ui-deprecatepropshoc (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-2026-13566/ (Markdown: https://insights.sbomify.com/MAL-2026-13566/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13566

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13566/
Summaries are generated and may contain mistakes; the official description above is the record.