xxoo-balePyPI
Advisory published Updated
xxoo-bale is a confirmed malicious PyPI package (MAL-2026-3425) that steals credentials and exfiltrates sensitive data (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.
Malicious code in xxoo-bale (PyPI)
What this malware does
The package contains code to install remotely stored malware and ensure its persistence. The code is not triggered automatically; it requires a separate trigger.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2025-07-cas-base
Reasons (based on the campaign):
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Downloads and executes a remote executable.
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malware
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persistence
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Search your lockfiles and build artifacts for xxoo-bale (version 1.0.0).
If you installed it — respond
xxoo-bale 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 xxoo-bale 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 xxoo-bale-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.