# MAL-2026-4347: Malicious code in @devcarron/clob (npm)


- **Type:** Malicious package
- **Package:** `@devcarron/clob` (npm)
- **Published:** 25 May 2026

## What is MAL-2026-4347?

MAL-2026-4347 is a malicious package in @devcarron/clob, published on 25 May 2026. 

### Official description

A campaign of npm packages sharing a common dropper (`clob.js`) that downloads and persistently installs a Windows executable from IPFS on `postinstall`. The dropper fetches the binary from IPFS CID `bafybeif3zkapj364ofnrvbty7oj5h5ufpxlp4s62usk3ulxrru35e3gssa` via multiple public gateways (Pinata, Cloudflare, ipfs.io), drops it to `%LOCALAPPDATA%`, registers Windows Registry persistence under `HKCU\Software\Microsoft\Windows\CurrentVersion\Run` using a hidden VBScript wrapper (window style 0, no taskbar entry), launches the payload immediately, and reports the victim's public IP address to a hardcoded C2 server via HTTP POST. macOS and Linux stubs are present but not yet configured. Developer artifacts bundled in `config/meta_data.json` leak the attacker's build path: `E:\getting IP and check list\clob-downloader\`.

`@devcarron/clob` is a scoped package identical in behavior to `clob.api` and likely published by the same actor as a distribution variant. It bundles `clob2.0.exe` (≈4 MB) directly in the tarball and also fetches from IPFS. Its `postinstall` script runs `clob.js`, which drops the executable to `%LOCALAPPDATA%\clob2.0.exe`. The C2 beacon transmits the victim's public IP to `http://45.8.22.112:2026/api/urls`.

@devcarron/clob ships a malicious postinstall dropper. package.json declares `postinstall: node clob.js`, which on `npm install` downloads an opaque Windows executable (clob2.0.exe) from IPFS via gateways including violet-tricky-quelea-562.mypinata.cloud, cloudflare-ipfs.com, and gateway.pinata.cloud (CID bafybeif3zkapj364ofnrvbty7oj5h5ufpxlp4s62usk3ulxrru35e3gssa), writes it under %LOCALAPPDATA%, generates a VBS launcher, and registers HKCU\Software\Microsoft\Windows\CurrentVersion\Run to silently launch the binary via wscript.exe with windowsHide. Equivalent persistence is installed on macOS via ~/Library/LaunchAgents/com.clob.agent.plist + launchctl load, and on Linux via ~/.config/autostart/clob.desktop. clob.js then resolves the installer's public IP through api.ipify.org and POSTs it to the hardcoded bare-IP endpoint http://45.8.22.112:2026/api/urls over plain HTTP — an install-time beacon notifying the operator of each successful infection. The tarball additionally ships a 4 MB Windows PE clob2.0.exe at the root, and README.md is copied verbatim from @img/sharp-win32-x64 (`Prebuilt sharp for use with Windows x64`) to disguise the package's true purpose. None of these behaviors relate to any legitimate library function: no source code, no advertised API, no relation to libvips/sharp.

## What should I do about MAL-2026-4347?

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-2026-4347 is a malicious package: @devcarron/clob (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-2026-4347/ (Markdown: https://insights.sbomify.com/MAL-2026-4347/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4347

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From sbomify Insights: https://insights.sbomify.com/MAL-2026-4347/
Summaries are generated and may contain mistakes; the official description above is the record.