# MAL-2026-4690: Malicious code in test-weavedb-sdk (npm)


- **Type:** Malicious package
- **Package:** `test-weavedb-sdk` (npm)
- **Published:** 26 May 2026

## What is MAL-2026-4690?

MAL-2026-4690 is a malicious package in test-weavedb-sdk, published on 26 May 2026. 

### Official description

Package name impersonates the legitimate weavedb-sdk; lib/index.js is a near-verbatim copy of that SDK's Arweave/Warp/EthCrypto class so the package functions as a drop-in substitute. package.json declares "preinstall": "./dist/runtime.node", directly executing a 976KB opaque ELF on every `npm install`. The.node extension is deceptive — legitimate Node native addons are loaded via require()/dlopen, not spawned as standalone executables. Strings recovered from the binary include `HTTP/1.1`, `POST`, `DELETE`, `https://`, `USERPROFILE`, `LIBBPF_0.0` (eBPF), `PTRACE`, `Ed25519`, and `RSA_PKCS1_` — capabilities (HTTP egress, kernel-level eBPF, anti-debug ptrace, home-directory enumeration, cryptographic operations) consistent with an info-stealer / C2 implant and unrelated to the package's advertised purpose. The binary ships without source, build system, or any documentation, and runs unconditionally with the installer's privileges at install time.

This package was compromised as part of the IronWorm campaign. This campaign executes a malicious binary payload during installation via a preinstall hook. The payload is a Rust-built infostealer that targets developer environments, scanning for and harvesting credentials related to cloud providers, object storage, databases, source-control, package registries, and AI developer tools. It also targets cryptocurrency wallets, specifically injecting a malicious JavaScript hook into the Exodus desktop wallet to capture passwords and recovery phrases. Furthermore, the malware exhibits worm-like behavior by stealing GitHub and NPM credentials to push malicious updates to the victim's repositories and publish trojanized packages, and it uses an eBPF-based kernel rootkit to hide its processes and network connections on Linux systems.

## What should I do about MAL-2026-4690?

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-2026-4690 is a malicious package: test-weavedb-sdk (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-2026-4690/ (Markdown: https://insights.sbomify.com/MAL-2026-4690/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/MAL-2026-4690

---
From sbomify Insights: https://insights.sbomify.com/MAL-2026-4690/
Summaries are generated and may contain mistakes; the official description above is the record.