MAL-2026-4690

Dashboard / Malicious Package / MAL-2026-4690

MAL-2026-4690

Summary: Malicious code in test-weavedb-sdk (npm)

Details: Source: amazon-inspector (e3bf1d859670570df6b5400c4ae762c8de880ada809bb4c371f32339744b8f9d) 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. Source: google-open-source-security (146faaf0d97c6a533a969bc3f3f117811f9317dc865ed4ab37f1679842ddeaae) 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.

References: https://www.npmjs.com/package/test-weavedb-sdk/v/1.1.1, http://www.ox.security/blog/ironworm-supply-chain-malware-hits-npm/, https://research.jfrog.com/post/iron-worm-shai-hulud-rustier-cousin/