bigpyxPyPI
Advisory published Updated
bigpyx is a confirmed malicious PyPI package (MAL-2025-192430) that steals credentials and exfiltrates sensitive data (malicious versions 0.0.1, 0.0.2). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in bigpyx (PyPI)
What this malware does
Continuation of the campaign with a slight different obfuscation of the malicious code, but there seems to be no difference in the behavior. The malicious code is downloaded and executed
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-12-graphnode
Reasons (based on the campaign):
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obfuscation
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Downloads and executes a remote malicious script.
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clones-real-package
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for bigpyx (2 malicious versions).
If you installed it — respond
bigpyx 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 bigpyx 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) · reporter
Detect & block this
O3 blocks bigpyx-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.