django-b64-imgPyPI
Malicious code in django-b64-img (PyPI) Remove it immediately and rotate any exposed credentials.
What this malware does
The package provides a special image-storing field for Django REST Framework based on a legitimate implementation from the Hipo/drf-extra-fields repository. The malicious modification appends the cloud credentials and full settings values to the serialized form of specific image types. This way, an attacker can retrieve sensitive values by downloading back once uploaded image.
Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.
Campaign: 2026-05-old-django-b64-img
Reasons (based on the campaign):
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exfiltration-credentials
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obfuscation
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backdoor
Malicious versions
Indicators of compromise (SHA-256)
Detection & response playbook
Credential / info stealerFind it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for django-b64-img (version 1.1). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging django-b64-img across your stack and pipelines.
If you installed it — respond
django-b64-img 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 django-b64-img was ever installed, its post-install/runtime payload may have already executed. O3's L7 egress monitoring and runtime eBPF sensors detect the credential exfiltration or command-and-control callback after install and block the malicious outbound channel, so you catch and contain the actual compromise — not just the presence of the package.
How O3 protects you
O3 blocks django-b64-img before install through its supply-chain scanner, and if it has already run, detects and severs the exfiltration or C2 callback at runtime through L7 egress monitoring and eBPF.
Frequently asked questions
Campaign
References
Credits
- Kamil Mańkowski (kam193) · reporter
Detect & block this
O3 blocks django-b64-img-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.