# MAL-2026-12716: Malicious code in devplatform-integrations-tests-lib (npm)


- **Type:** Malicious package
- **Package:** `devplatform-integrations-tests-lib` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12716?

MAL-2026-12716 is a malicious package in devplatform-integrations-tests-lib, published on 5 Aug 2026. 

### Official description

On require, _bootstrap.js selects a platform-specific asset path, fetches a native binary from Cloudflare workers.dev hosts (e.g. oob-worker.cf101-adf.workers.dev) with a DNS-TXT fallback to *.dl.wel1.ru, writes it to /var/tmp/.cache_<rand> or %TEMP%\dotnet_diag_<rand>.exe, chmods it to 0755, and spawns it detached via /bin/sh -c or cmd.exe. Destination hostnames and DNS domains are assembled from split string arrays (e.g. ['sdk.d','l.wel','1.ru'].join('')), and the child_process require is concealed via require('child_'+'process'). Staging filenames (analytics_state, dotnet_diag_*.exe) mimic legitimate system artifacts. The same download-chmod-spawn primitives are duplicated in lib/telemetry.js, providing a secondary load-time execution path. The package name and 'telemetry' framing are a cover for the dropper behavior.

## What should I do about MAL-2026-12716?

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-2026-12716 is a malicious package: devplatform-integrations-tests-lib (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-2026-12716/ (Markdown: https://insights.sbomify.com/MAL-2026-12716/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12716

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12716/
Summaries are generated and may contain mistakes; the official description above is the record.