# MAL-2026-13597: Malicious code in dolyame-ui-scrollblock (npm)


- **Type:** Malicious package
- **Package:** `dolyame-ui-scrollblock` (npm)
- **Published:** 7 Aug 2026

## What is MAL-2026-13597?

MAL-2026-13597 is a malicious package in dolyame-ui-scrollblock, published on 7 Aug 2026. 

### Official description

On require() of the package, index.js loads _helpers.js and lib/telemetry.js, which reassemble Cloudflare Workers hostnames from split string fragments (['oob-worker.cf100','-416.work','ers','.de','v'].join('')) and download a platform-specific binary via https.get. The payload is written to /tmp under a hidden dot-file name (or to Windows Temp as dotnet_diag_*.exe), chmod'd 0755 via fs['chmod'+'Sync'], and spawned detached with cp.spawn('/bin/sh', ['-c', filePath+' &'], {detached:true}) or the cmd.exe equivalent. A secondary delivery path resolves DNS TXT records under *.dl.wel1.ru (c.<domain> for chunk count, N.<domain> for each chunk), concatenates the base64 payload, and executes it the same way. Sensitive API names (child_process, chmodSync) and destination hostnames are split-string-obfuscated to evade static analysis. The 'Analytics SDK' framing in lib/telemetry.js duplicates the same fetch-write-chmod-exec chain. Installing and importing the package fetches and runs opaque attacker-controlled native code on the developer's machine with no pinning or signature verification.

## What should I do about MAL-2026-13597?

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-2026-13597 is a malicious package: dolyame-ui-scrollblock (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-2026-13597/ (Markdown: https://insights.sbomify.com/MAL-2026-13597/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-13597

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-13597/
Summaries are generated and may contain mistakes; the official description above is the record.