Which versions of just-framework are malicious?

The following PyPI versions of just-framework are flagged malicious: 1.3.3. Treat any of these as compromised.

How do I remediate just-framework if I installed it?

just-framework 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.

I already installed just-framework — how do I know if it already compromised me?

If just-framework 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.

Is just-framework part of a known attack campaign?

Yes — just-framework is associated with the 2025-01-just-framework campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find just-framework across my projects, lockfiles, and CI pipelines?

Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for just-framework (version 1.3.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging just-framework across your stack and pipelines.

Malicious package

just-frameworkPyPI

Malicious code in just-framework (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-191770

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

pip uninstall just-framework

What this malware does

Importing the module exfiltrates basic information using DNS queries. There is no other purpose of the package.

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: 2025-01-just-framework

Reasons (based on the campaign):

The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.
dependency-confusion

Malicious versions

1 flagged

1.3.3

Indicators of compromise (SHA-256)

3bc88c984ebb9330eb73aa71ee4d6448a2036c6dcbf6e782c8f3f54931a0a1b0

95cb11d9c49d15c2a3d932930ab9d4f1567e118bf2ed951ab313856878f88859

da2f473650427c9e7a4bc407509cd8c674e3e1bd18c5b23cdf387c79a8a10c42

Detection & response playbook

Credential / info stealer

Find it
Scan your lockfiles (package-lock.json, pnpm-lock.yaml, yarn.lock, requirements.txt, poetry.lock, etc.) and build artifacts for just-framework (version 1.3.3). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging just-framework across your stack and pipelines.
If you installed it — respond
just-framework 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 just-framework 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 just-framework 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

No. just-framework on PyPI has been identified as a malicious package (version 1.3.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2025-01-just-framework

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)

Detect & block this

O3 blocks just-framework-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring