What does the worldhello malware do?

The OpenSSF Package Analysis project identified 'worldhello' @ 1.0.0 (pypi) as malicious. It is considered malicious because: - The package executes one or more commands associated with malicious behavior.

Which versions of worldhello are malicious?

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

How do I remediate worldhello if I installed it?

Remove worldhello from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.

I already installed worldhello — how do I know if it already compromised me?

If worldhello 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.

How do I find worldhello across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for worldhello (version 1.0.0).

Malicious package

worldhelloPyPI

worldhello is a confirmed malicious PyPI package (MAL-2025-5174) that executes malicious code on install (malicious version 1.0.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in worldhello (PyPI)

MAL-2025-5174

Immediate action

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

pip uninstall worldhello

What this malware does

The OpenSSF Package Analysis project identified 'worldhello' @ 1.0.0 (pypi) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

c09616d1a3cf63c69efe5b81863fee024898fd16025a96efa3e70504012bb6bd

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for worldhello (version 1.0.0).
If you installed it — respond
Remove worldhello from your project and lockfile, then assume any secrets accessible to the build or runtime were exposed: rotate API keys, tokens, and credentials, and audit for unexpected outbound activity or persistence.
Did it already run?
If worldhello 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. worldhello 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.

Credits

OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks worldhello-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the malicious outbound activity and severs the channel.

Malware detection Runtime egress monitoring

Explore

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