web3importsPyPI
Advisory published Updated
web3imports is a confirmed malicious PyPI package (MAL-2025-2012) that steals credentials and exfiltrates sensitive data (malicious version 1.1.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in web3imports (PyPI)
What this malware does
Importing the module starts (through init.py) the code that download, extracts and starts a remote executable. This has been identified by any.run as a AsyncRAT. The VirtusTotal detection rate was originally at the edge of false positive, but increased significantly during a few hours.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-01-asynchelpers
Reasons (based on the campaign):
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infostealer
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Downloads and executes a remote executable.
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malware
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for web3imports (version 1.1.0).
If you installed it — respond
web3imports 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 web3imports 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 web3imports-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.