Which versions of pytojn are malicious?

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

How do I remediate pytojn if I installed it?

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

If pytojn 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 pytojn part of a known attack campaign?

Yes — pytojn is associated with the RLMA-2024-09079, 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 pytojn across my projects, lockfiles, and CI pipelines?

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

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

Malicious package

pytojnPyPI

Advisory published Jun 28, 2024Updated Dec 12, 2025

pytojn is a confirmed malicious PyPI package (MAL-2024-10142) 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 pytojn (PyPI)

MAL-2024-10142

Immediate action

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

pip uninstall pytojn

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)

0e24253262cefa219026e6d5569aba49a29c3e988c8d8c4e9744228e973ffcd2

50dd14ab2b0a62a03a48d1ebf997ae5fd19d4786e5ea53ae8a8af01ddf1cde65

3ae5bbdda0effc9eeb5927e15a34dd64d5d2f37029616e8a22d82cc51e88c85f

f57b4f749418247e1e0c6a40c6536b9f75811f0c4b0ae0c1843b2637f3120ab3

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for pytojn (version 1.0.0).
If you installed it — respond
pytojn 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 pytojn 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. pytojn 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-2024-09079funcaptcha-ru

References

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks pytojn-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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