MAL-2026-13161 Malicious code in dolyame-ui-island (npm)
Malicious package
Published
MAL-2026-13161 is a malicious package: dolyame-ui-island (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-2026-13161/ (Markdown: https://insights.sbomify.com/MAL-2026-13161/index.md)
- Package
- dolyame-ui-island
- Registry
- npm
What is MAL-2026-13161?
MAL-2026-13161 is a malicious package in dolyame-ui-island, published on 5 Aug 2026.
Official description
On require() of dolyame-ui-island, index.js loads setup.js which downloads a platform-specific binary from obfuscated Cloudflare Workers hosts (oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev) with a DNS-TXT base64 fallback channel across numbered subdomains of wel1.ru (sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru). Hostnames are assembled at runtime via array.join() to defeat static analysis. The fetched bytes are written to a randomized tmp path mimicking a diagnostic tool (/var/tmp/.cache_<hex> or dotnet_diag_<hex>.exe), chmodded to 0755 on POSIX, and spawned detached via cp.spawn("/bin/sh",["-c",fp+" &"],{detached:true}).unref(). Cover-story comments in setup.js reference 'analytics_state' and 'Content-type negotiation'. The package name impersonates a payments-UI library, but the shipped code has no such functionality.
What should I do about MAL-2026-13161?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.