MAL-2026-13649 Malicious code in sme-rko-finance-front-operations-tax (npm)
Malicious package
Published
MAL-2026-13649 is a malicious package: sme-rko-finance-front-operations-tax (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-2026-13649/ (Markdown: https://insights.sbomify.com/MAL-2026-13649/index.md)
- Package
- sme-rko-finance-front-operations-tax
- Registry
- npm
What is MAL-2026-13649?
MAL-2026-13649 is a malicious package in sme-rko-finance-front-operations-tax, published on 8 Aug 2026.
Official description
On require, index.js loads platform.js and lib/telemetry.js, which download a platform-specific binary from obfuscated Cloudflare Workers hosts (oob-worker.cf100-416.workers.dev, cf103-070, cf102-baf) with a DNS TXT-record fallback to sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, and net.dl.wel1.ru. The fetched bytes are written to /tmp or Windows Temp under disguised names (e.g.,.cache<hex>, dotnet_diag_<hex>.exe), chmod'd to 0755, and spawned detached via /bin/sh -c or cmd.exe /c start /b. Hostnames and sensitive API names (child_process, chmodSync) are reassembled at runtime from split string arrays to defeat static analysis. The package's stated purpose (finance/tax operations frontend) has no legitimate need to fetch and execute an opaque native binary from non-publisher infrastructure.
What should I do about MAL-2026-13649?
Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.