Which versions of opensesa are malicious?

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

How do I remediate opensesa if I installed it?

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

If opensesa 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 opensesa part of a known attack campaign?

Yes — opensesa is associated with the RLMA-2024-08625, funcaptcha-ru 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 opensesa across my projects, lockfiles, and CI pipelines?

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

Part of a larger attack: funcaptcha-ru published 161 malicious packages. See the full campaign →

Malicious package

opensesaPyPI

Advisory published Jun 28, 2024Updated Dec 12, 2025

opensesa is a confirmed malicious PyPI package (MAL-2024-10083) 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 opensesa (PyPI)

MAL-2024-10083

Immediate action

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

pip uninstall opensesa

What this malware does

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

Campaign: funcaptcha-ru

Reasons (based on the campaign):

infostealer

Malicious versions

1 flagged

1.0.0

Indicators of compromise (SHA-256)

a7fce332435de8a3b3d578dbeff4236c81451a4b575f6032c84436f089999866

a526cc87d43112e901fe0764c4991d93823d8af6a2d6cfd94aa6e5bd076fd51f

ce368bb4fa1e8c35e5e25c171b6afac0c7d3a83a78789515278c709a8c9e404a

0149c0e46b5522ab6575c967df01167217c700a27b183c0c03d5e76fab2a605d

Detection & response playbook

Credential / info stealer

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

RLMA-2024-08625funcaptcha-ru

References

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks opensesa-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

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