MAL-2026-12693 Malicious code in devplatform-api-v1-endpoint (npm)
Malicious package
Published
MAL-2026-12693 is a malicious package: devplatform-api-v1-endpoint (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-2026-12693/ (Markdown: https://insights.sbomify.com/MAL-2026-12693/index.md)
- Package
- devplatform-api-v1-endpoint
- Registry
- npm
What is MAL-2026-12693?
MAL-2026-12693 is a malicious package in devplatform-api-v1-endpoint, published on 5 Aug 2026.
Official description
On require, adapter.js selects a platform-specific asset path and fetches an executable from string-split-obfuscated hosts under oob-worker.cf10*-*.workers.dev, falling back to base64-encoded payload chunks reassembled from DNS TXT queries against *.dl.wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). The fetched bytes are written to /var/tmp or %TEMP% under cover-story filenames (.cache<hex>, dotnet_diag_<hex>.exe), chmod 0755, and spawned detached via /bin/sh -c or cmd /c start /b, with no hash or signature verification. A persistence marker (.analytics_state) with a ~6.4h freshness window throttles repeat activity. The delivery mechanism has no relation to the package's advertised SDK purpose, and the C2 host strings are reconstructed at runtime from split fragments via.join('') to defeat static analysis.
What should I do about MAL-2026-12693?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.