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Malicious package

web3nodePyPI

Advisory published Updated

web3node is a confirmed malicious PyPI package (MAL-2025-3016) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.1.1, 0.1.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in web3node (PyPI)

MAL-2025-3016
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall web3node

What this malware does

web3socket: In the class there is a hidden code that loads a binary Python code from a remote location impersonating PyPI Github account web3node: The package is used to download and run remote code by other packages. Files darwin.py, gnu.py and win32.py contain code that adds executing remote code to the crontab as well as an attempt to escalate privileges. w3socket: It uses web3node to start remote code in config.py

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-02-web3socket

Reasons (based on the campaign):

  • dependency-confusion

  • impersonation

  • Downloads and executes a remote malicious script.

Malicious versions

4 flagged
0.1.00.1.10.1.20.1.3

Indicators of compromise (SHA-256)

9f7d028a6b3b2858230864bbc355eda0a452dfb688056fb4fae84fd0b15404f8
3f540afd8045a0249c52c523780828280acb6752ee85c16e648f6ae5e5f65f64
9f226e2391e0717c113d67f398aae7c36705ffbef3310caebd76a1b8b11f0811
dd079877a67f6fe8bd69db0f5bc6d0d9a7882b29726432cf7ae783d3006a2a3d
e6f0cbb0f7b8f8eee903940193477372e84b9a63574992f1e300f96d3b659039

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for web3node (4 malicious versions).

  2. If you installed it — respond

    web3node 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 web3node 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. web3node on PyPI has been identified as a malicious package (versions 0.1.0, 0.1.1, 0.1.2, 0.1.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-020152025-02-web3socketRLUA-2026-00919

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks web3node-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

web3node (PyPI) malicious package — MAL-2025-3016 | O3 Security