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Malicious package

weavedb-contractsnpm

weavedb-contracts is a confirmed malicious npm package (MAL-2026-5192) that steals credentials and exfiltrates sensitive data (malicious version 0.45.2). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in weavedb-contracts (npm)

MAL-2026-5192
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
npm uninstall weavedb-contracts

What this malware does

No concrete indicators of installer-side harm were identified in this version of weavedb-contracts. No lifecycle scripts, network beacons, credential reads, or known-bad infrastructure were observed. Coverage of this release was partial, so a human reviewer should confirm before publishing a verdict.

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.

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
0.45.2

Indicators of compromise (SHA-256)

146faaf0d97c6a533a969bc3f3f117811f9317dc865ed4ab37f1679842ddeaae
a352d761eba6aa71b41fc09bb621d3f04e8c7c0e74487392a7c69e77719426b9
6e92067655db45791a54b80637fdbee8141a7f751833c10bb4115d93dc1c2048

Detection & response playbook

Credential / info stealer
  1. Find it

    Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for weavedb-contracts (version 0.45.2). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging weavedb-contracts across your stack and pipelines.

  2. If you installed it — respond

    weavedb-contracts 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-contracts was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.

  4. How O3 protects you

    O3 blocks weavedb-contracts before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.

Frequently asked questions

No. weavedb-contracts on npm has been identified as a malicious package (version 0.45.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-008185GHSA-gg4x-c8wr-53p9

References

Credits

  • Amazon Inspector · finder

Detect & block this

O3 blocks weavedb-contracts-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-contracts (npm) malicious package — MAL-2026-5192 | O3 Security