Which versions of ferns are malicious?

The following PyPI versions of ferns are flagged malicious: 1.0. Treat any of these as compromised.

How do I remediate ferns if I installed it?

Remove ferns 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 ferns — how do I know if it already compromised me?

If ferns 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 ferns part of a known attack campaign?

Yes — ferns is associated with the RLMA-2024-03917, RLUA-2024-08273 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 ferns across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for ferns (version 1.0).

Malicious package

fernsPyPI

ferns is a confirmed malicious PyPI package (MAL-2024-5137) that executes malicious code on install (malicious version 1.0). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in ferns (PyPI)

MAL-2024-5137

Immediate action

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

pip uninstall ferns

Malicious versions

1 flagged

1.0

Indicators of compromise (SHA-256)

37c821c9c85df950d5a06c0b4eaf7ae6db5c34dd986bf9556cd14b1a945b41b8

e16f6ff51ea5845e4e68eaff2e349695b9a17066a16166e7e239175a24da6c39

Detection & response playbook

Malicious package

Find it
Search your lockfiles and build artifacts for ferns (version 1.0).
If you installed it — respond
Remove ferns 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 ferns 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. ferns on PyPI has been identified as a malicious package (version 1.0 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2024-03917RLUA-2024-08273

References

github.com

Credits

ReversingLabs · finder

Detect & block this

O3 blocks ferns-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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