kraken123PyPI
Advisory published Updated
kraken123 is a confirmed malicious PyPI package (MAL-2025-191778) that steals credentials and exfiltrates sensitive data (malicious versions 0.1.0, 0.2.0, 0.3.0…). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in kraken123 (PyPI)
What this malware does
As even described, the package contains a malicious code collecting large amount of data. The description suggests educational use, yet, the code can cause real harm. Specifically, the C2 servers defined in the package seems to be selected as trusted domains that would ignore the data sent. However, among them is at least one domain available for sale at the time of analysis - opening the room for collecting data by the uploader.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-08-kraken-virus
Reasons (based on the campaign):
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malware
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exfiltration-browser-data
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exfiltration-generic
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for kraken123 (5 malicious versions).
If you installed it — respond
kraken123 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 kraken123 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)
Detect & block this
O3 blocks kraken123-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.