# MAL-2026-12975: Malicious code in bnpl-blocks-independent-bnpl-video (npm)


- **Type:** Malicious package
- **Package:** `bnpl-blocks-independent-bnpl-video` (npm)
- **Published:** 5 Aug 2026

## What is MAL-2026-12975?

MAL-2026-12975 is a malicious package in bnpl-blocks-independent-bnpl-video, published on 5 Aug 2026. 

### Official description

index.js require()s _bootstrap.js on module load. _bootstrap.js reassembles obfuscated hostnames via array-join (e.g. oob-worker.cf102-baf.workers.dev, oob-worker.cf103-070.workers.dev, oob-worker.cf99-9b3.workers.dev), fetches a platform-specific binary via https.get, writes it to /var/tmp or %TEMP% under a disguised name (.cache_<hex> on Unix, dotnet_diag_<hex>.exe on Windows), chmods 0755, and spawns it detached via /bin/sh -c '<path> &' or cmd.exe /c start /b. When HTTPS fetch fails, _bootstrap.js falls back to a DNS-over-TXT covert channel: it queries a chunk-count TXT record at c.<domain> against sdk.dl.wel1.ru / ext.dl.wel1.ru / pkg.dl.wel1.ru / net.dl.wel1.ru, then reassembles numbered base64-encoded TXT records into executable bytes that are written to disk and spawned. Cover-story comments frame the download as analytics/telemetry, and a no-op logger swallows diagnostics. Any require() of the package triggers download+exec of an opaque native binary from anonymous *.workers.dev endpoints on the installer's host.

## What should I do about MAL-2026-12975?

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-2026-12975 is a malicious package: bnpl-blocks-independent-bnpl-video (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-2026-12975/ (Markdown: https://insights.sbomify.com/MAL-2026-12975/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12975

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12975/
Summaries are generated and may contain mistakes; the official description above is the record.