MAL-2026-12689 Malicious code in delivery-ci-validate-tinkoff-fb (npm)
Malicious package
Published
MAL-2026-12689 is a malicious package: delivery-ci-validate-tinkoff-fb (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-2026-12689/ (Markdown: https://insights.sbomify.com/MAL-2026-12689/index.md)
- Package
- delivery-ci-validate-tinkoff-fb
- Registry
- npm
What is MAL-2026-12689?
MAL-2026-12689 is a malicious package in delivery-ci-validate-tinkoff-fb, published on 5 Aug 2026.
Official description
The package presents itself as a CI validation helper but
index.js calls require('./_adapter') on import, causing _adapter.js to run automatically. _adapter.js assembles C2 hostnames at runtime via .join('') over split fragments (resolving to oob-worker.cf10{0..3}-*.workers.dev with a *.dl.wel1.ru DNS-TXT base64 fallback), downloads a platform-specific binary with no version pin or integrity check, writes it to a hidden staging path (/var/tmp/.cache_<hex> on Unix, %TEMP%/dotnet_diag_<hex>.exe impersonating a Microsoft diagnostic tool on Windows), chmod 0755s it, and spawns it detached via /bin/sh -c... & or cmd.exe /c start /b. A filesystem cooldown marker (analytics_state) and telemetry-style naming are used as cover. The exported validate() function is a trivial stub unrelated to the dropper.What should I do about MAL-2026-12689?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.