Which versions of netbenchkit are malicious?

The following PyPI versions of netbenchkit are flagged malicious: 1.0.0, 1.0.1, 1.0.2. Treat any of these as compromised.

How do I remediate netbenchkit if I installed it?

netbenchkit 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 netbenchkit — how do I know if it already compromised me?

If netbenchkit 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 netbenchkit part of a known attack campaign?

Yes — netbenchkit is associated with the 2025-12-synium 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 netbenchkit 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 netbenchkit (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging netbenchkit across your stack and pipelines.

Malicious package

netbenchkitPyPI

Malicious code in netbenchkit (PyPI) Remove it immediately and rotate any exposed credentials.

MAL-2025-192437

Immediate action

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

pip uninstall netbenchkit

What this malware does

Package imports and executes malicious synium package

Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers.

Campaign: 2025-12-synium

Reasons (based on the campaign):

exfiltration-credentials
exfiltration-generic

Malicious versions

3 flagged

1.0.01.0.11.0.2

Indicators of compromise (SHA-256)

fa328b263fd5f17449e326d05af9a5849a25d6c028d092e586097e95c4e1db59

2803ab0a8efcb881d6585c53fb14da61b9a909b30b2be659cd9ddd5b7ec55fae

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 netbenchkit (3 malicious versions). O3 Security's supply-chain scanner checks every dependency against known-malicious package intelligence at install time and in CI, flagging netbenchkit across your stack and pipelines.
If you installed it — respond
netbenchkit 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 netbenchkit 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 netbenchkit 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. netbenchkit on PyPI has been identified as a malicious package (versions 1.0.0, 1.0.1, 1.0.2 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2025-12-synium

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks netbenchkit-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