Which versions of py-sysbench are malicious?

The following PyPI versions of py-sysbench are flagged malicious: 1.0.0. Treat any of these as compromised.

How do I remediate py-sysbench if I installed it?

py-sysbench 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 py-sysbench — how do I know if it already compromised me?

If py-sysbench 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.

Is py-sysbench part of a known attack campaign?

Yes — py-sysbench is associated with the 2026-03-pyutils-helper 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 py-sysbench across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for py-sysbench (version 1.0.0).

Malicious package

py-sysbenchPyPI

Advisory published Mar 8, 2026Updated Mar 8, 2026

py-sysbench is a confirmed malicious PyPI package (MAL-2026-1280) 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 py-sysbench (PyPI)

MAL-2026-1280

Immediate action

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

pip uninstall py-sysbench

What this malware does

Importing the module starts a silent cryptocurrency mining in the background for a hardcoded wallet.

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

Campaign: 2026-03-pyutils-helper

Reasons (based on the campaign):

cryptominer

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

bcd34dcdc69398d2b97a0890cc550974824096b2844524f868505aa32032f147

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for py-sysbench (version 1.0.0).
If you installed it — respond
py-sysbench 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 py-sysbench 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

No. py-sysbench on PyPI has been identified as a malicious package (version 1.0.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2026-03-pyutils-helper

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193) · reporter

Detect & block this

O3 blocks py-sysbench-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

Explore

All malware advisories How O3 detects malware Vulnerability database