# MAL-2026-13645: Malicious code in sme-rko-finance-front-operations-penalty (npm)


- **Type:** Malicious package
- **Package:** `sme-rko-finance-front-operations-penalty` (npm)
- **Published:** 8 Aug 2026

## What is MAL-2026-13645?

MAL-2026-13645 is a malicious package in sme-rko-finance-front-operations-penalty, published on 8 Aug 2026. 

### Official description

On require() of the package, _runtime.js and lib/telemetry.js reassemble Cloudflare Workers hostnames (oob-worker.cf103-07/cf99-9b3/cf100-416/cf101-adf.workers.dev) from split string arrays, fetch a platform-specific binary from /pkg/package[-arm64|.exe|loader_mac], write it to /var/tmp/.cache_<uid> on Unix or %TEMP%\dotnet_diag_<uid>.exe on Windows, chmod 0755, and spawn it detached via /bin/sh -c or cmd.exe. A DNS TXT chunked-base64 fallback channel to *.dl.wel1.ru is used when HTTPS fails. Obfuscation techniques include string-split concatenation of host names, dynamic require("child_" + "process"), bracket-notation fs["chmod" + "Sync"], and disguised filenames masquerading as system diagnostics (dotnet_diag,.analytics_state,.cache_*). Both the auxiliary _runtime.js and the main entrypoint lib/telemetry.js reachable via index.js contain the dropper primitives, ensuring execution on import.

## What should I do about MAL-2026-13645?

Remove the package from your dependencies and lockfiles, then rotate any secrets on machines where it was installed.

## Fix prompt for AI coding agents

```text
MAL-2026-13645 is a malicious package: sme-rko-finance-front-operations-penalty (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-2026-13645/ (Markdown: https://insights.sbomify.com/MAL-2026-13645/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13645

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-13645/
Summaries are generated and may contain mistakes; the official description above is the record.