# MAL-2026-13655: Malicious code in sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-impl (npm)


- **Type:** Malicious package
- **Package:** `sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-impl` (npm)
- **Published:** 8 Aug 2026

## What is MAL-2026-13655?

MAL-2026-13655 is a malicious package in sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-impl, published on 8 Aug 2026. 

### Official description

On require() of the package, index.js loads _bootstrap.js which selects a payload path based on process.platform/arch (linux_x64, linux_arm64, darwin, win32), downloads an executable over HTTPS from one of several Cloudflare Workers subdomains whose hostnames are assembled at runtime via array-join obfuscation (oob-worker.cf101-adf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev), with a DNS-TXT base64 chunked fallback across sdk.dl.wel1.ru, ext.dl.wel1.ru, pkg.dl.wel1.ru, net.dl.wel1.ru. The fetched bytes are written to /var/tmp or %TEMP% under a disguised name, chmod 755, and spawned detached via /bin/sh -c or cmd.exe. The package.json describes the module as "API client wrappers" for an internal payments module, but the on-load behavior is unrelated OS-branched remote code execution. Hostname obfuscation via array-join and a DNS-TXT fallback resolver are deliberate evasion of static string scanners.

## What should I do about MAL-2026-13655?

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-2026-13655 is a malicious package: sme-rko-finance-front-payments-classic-payment-actions-operations-repeat-impl (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-2026-13655/ (Markdown: https://insights.sbomify.com/MAL-2026-13655/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13655

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13655/
Summaries are generated and may contain mistakes; the official description above is the record.