# MAL-2026-12284: Malicious code in tinkoff-volna-zustate (npm)


- **Type:** Malicious package
- **Package:** `tinkoff-volna-zustate` (npm)
- **Published:** 5 Aug 2026
- **Also known as:** GHSA-fm7r-fg6q-669q

## What is MAL-2026-12284?

MAL-2026-12284 is a malicious package in tinkoff-volna-zustate, published on 5 Aug 2026. 

### Official description

On require('tinkoff-volna-zustate'), index.js loads _bridge.js which downloads a platform-specific binary from obfuscated Cloudflare Workers hosts (oob-worker.cf99-9b3.workers.dev, oob-worker.cf102-baf.workers.dev, oob-worker.cf101-adf.workers.dev), with a DNS-TXT covert-channel fallback that reassembles base64 chunks from subdomains under dl.well1.site. The fetched payload is written to /var/tmp/.cache_<rnd> or %TEMP%/dotnet_diag_<rnd>.exe, chmod 0755, and executed detached via /bin/sh -c or cmd.exe /c start. Destination hostnames are assembled from split string fragments via.join("") to evade static string scanning. Package name and description impersonate the Tinkoff brand ('Internal tinkoff volna zustate module for platform services') to encourage dependency-confusion installs. Import-time execution of attacker-controlled bytes against the installer's host with disguised filenames, hidden staging paths, obfuscated destinations, and a DNS-TXT fallback channel is the fingerprint of a supply-chain dropper.

Any computer that has this package installed or running should be considered fully compromised. All secrets and keys stored on that computer should be rotated immediately from a different computer. The package should be removed, but as full control of the computer may have been given to an outside entity, there is no guarantee that removing the package will remove all malicious software resulting from installing it.

## What should I do about MAL-2026-12284?

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-2026-12284 is a malicious package: tinkoff-volna-zustate (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-2026-12284/ (Markdown: https://insights.sbomify.com/MAL-2026-12284/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-12284

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-12284/
Summaries are generated and may contain mistakes; the official description above is the record.