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)
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):
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dependency-confusion
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impersonation
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Downloads and executes a remote malicious script.
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for web3node (4 malicious versions).
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.
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
Campaign
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.