# MAL-2026-13500: Malicious code in delivery-ci-dpat (npm)


- **Type:** Malicious package
- **Package:** `delivery-ci-dpat` (npm)
- **Published:** 7 Aug 2026

## What is MAL-2026-13500?

MAL-2026-13500 is a malicious package in delivery-ci-dpat, published on 7 Aug 2026. 

### Official description

On require() of delivery-ci-dpat, _platform.js runs setup() at module load: it fetches a platform-specific binary over HTTPS from hardcoded Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf100-416.workers.dev, oob-worker.cf101-adf.workers.dev, oob-worker.cf102-baf.workers.dev), writes it to a hidden path under /tmp or %TEMP%, chmods it 0o755, and spawns it detached via /bin/sh -c '<file> &' or cmd.exe /c start /b. A DNS-TXT covert channel provides a fallback delivery path: dnsChunked() queries c.<domain> under *.dl.wel1.ru for a chunk count, iterates 0..N.<domain> collecting base64-encoded TXT records, reassembles them into a binary buffer, and executes the reconstructed payload the same way. The C2 hostnames and DNS fallback domain are assembled at runtime from split-string fragments (['oob-worker.cf101-adf.worker','s.','dev'].join(''); ['sdk.dl.wel','1.r','u'].join('')) to evade static matching. A filesystem stamp is used for run-once dedup and the behavior is labeled as analytics/telemetry.

## What should I do about MAL-2026-13500?

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-2026-13500 is a malicious package: delivery-ci-dpat (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-2026-13500/ (Markdown: https://insights.sbomify.com/MAL-2026-13500/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13500

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13500/
Summaries are generated and may contain mistakes; the official description above is the record.