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Malicious package

weavedb-litenpm

Advisory published Updated

weavedb-lite is a confirmed malicious npm package (MAL-2026-4720) that steals credentials and exfiltrates sensitive data (malicious version 0.1.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in weavedb-lite (npm)

MAL-2026-4720
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall weavedb-lite

What this malware does

package.json declares "preinstall": "./src/deps.ts", but src/deps.ts is not TypeScript — its first bytes are the ELF magic (\x7fELF\x02\x01\x01), identifying it as a ~954 KB Linux x86-64 executable (sha256 36abd242…b436d36). Renaming a native binary with a .ts extension is deliberate disguise to evade reviewers and scanners. Running npm install weavedb-lite on Linux directly executes this opaque binary on the installer's machine before any other code runs, with no source, no documented purpose, no version pin, and no integrity verification. Extracted strings include HTTP/POST and https:// indicators consistent with network exfiltration or C2 callback, but the binary's actual behavior cannot be inspected statically. Additionally, the package name weavedb-lite mimics the WeaveDB ecosystem and declares bin entries (wao, wao-esm) that collide with the legitimate wao package it also depends on, fitting a typosquat/namespace-abuse pattern targeting developers searching for WeaveDB or wao tooling. The preinstall ELF execution alone is sufficient to block; the typosquat shape corroborates intentional impersonation.

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.

Malicious versions

1 flagged
0.1.1

Indicators of compromise (SHA-256)

3017d9faf2f1f8a8973162392159e8d185b9c676555d406da261e67cd95395e8
146faaf0d97c6a533a969bc3f3f117811f9317dc865ed4ab37f1679842ddeaae

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for weavedb-lite (version 0.1.1).

  2. If you installed it — respond

    weavedb-lite is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

  3. Did it already run?

    If weavedb-lite was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. weavedb-lite on npm has been identified as a malicious package (version 0.1.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-004840

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks weavedb-lite-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

weavedb-lite (npm) malicious package — MAL-2026-4720 | O3 Security