MAL-2026-12683 Malicious code in delivery-ci-tech-holder (npm)
Malicious package
Published
MAL-2026-12683 is a malicious package: delivery-ci-tech-holder (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-2026-12683/ (Markdown: https://insights.sbomify.com/MAL-2026-12683/index.md)
- Package
- delivery-ci-tech-holder
- Registry
- npm
What is MAL-2026-12683?
MAL-2026-12683 is a malicious package in delivery-ci-tech-holder, published on 5 Aug 2026.
Official description
On require() of the package, index.js loads support.js, which reconstructs hardcoded destinations from split string arrays (oob-worker.cf100-416.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, with a DNS-TXT fallback via sdk.dl.wel1.ru), downloads a platform-specific binary, writes it to /var/tmp/.cache<hex> on Unix or %TEMP%\dotnet_diag_<hex>.exe on Windows, chmods it 0755, and spawns it detached via /bin/sh -c or cmd with stdio ignored and unref(). No hash or signature verification is performed, the destination hosts are unrelated to the package publisher, filenames impersonate legitimate system components (dotnet_diag,.cache_), and the string-split reassembly and DNS-TXT fallback channel are designed to evade static inspection. The fetched bytes are executed with the installer's privileges.
What should I do about MAL-2026-12683?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.