What does the rtcplogin malware do?

Importing the module starts an infostealer Category: MALICIOUS - The campaign has clearly malicious intent, like infostealers. Campaign: 2025-11-mescouilles Reasons (based on the campaign): - infostealer - infostealer:kiwi - infostealer:cstealer - exfiltration-generic - exfiltration-browser-data - exfiltration-credentials - files-exfiltration - The package contains code to detect if it is running in a sandbox environment.

Which versions of rtcplogin are malicious?

The following PyPI versions of rtcplogin are flagged malicious: 1.6.3. Treat any of these as compromised.

How do I remediate rtcplogin if I installed it?

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

If rtcplogin 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 rtcplogin part of a known attack campaign?

Yes — rtcplogin is associated with the 2025-11-mescouilles, RLMA-2025-06588, RLUA-2026-00733 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 rtcplogin across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for rtcplogin (version 1.6.3).

Part of a larger attack: 2025-11-mescouilles published 10 malicious packages. See the full campaign →

Malicious package

rtcploginPyPI

Advisory published Nov 26, 2025Updated Mar 19, 2026

rtcplogin is a confirmed malicious PyPI package (MAL-2025-191858) that steals credentials and exfiltrates sensitive data (malicious version 1.6.3). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in rtcplogin (PyPI)

MAL-2025-191858

Immediate action

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

pip uninstall rtcplogin

What this malware does

Importing the module starts an infostealer

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

Campaign: 2025-11-mescouilles

Reasons (based on the campaign):

infostealer
infostealer:kiwi
infostealer:cstealer
exfiltration-generic
exfiltration-browser-data
exfiltration-credentials
files-exfiltration
The package contains code to detect if it is running in a sandbox environment.

Malicious versions

1 flagged

1.6.3

Indicators of compromise (SHA-256)

dc0c489d9214fe0d7daf68f148259523f674734b0ca4855d776d418bd5e03451

2f986d2da01fbdba339f3d073a84dd5c57ba0aa19113574702160654f70f0620

57065be5473ead956191d9ea027c0fa51634fbed3a4d05feec3c362167fe91c3

22abc2174e4df1d5aede4cad352bf9c35dfb00bfee432a58b84883f339779b13

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for rtcplogin (version 1.6.3).
If you installed it — respond
rtcplogin 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 rtcplogin 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. rtcplogin on PyPI has been identified as a malicious package (version 1.6.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

2025-11-mescouillesRLMA-2025-06588RLUA-2026-00733

References

bad-packages.kam193.eu

Credits

Kamil Mańkowski (kam193)
ReversingLabs · finder

Detect & block this

O3 blocks rtcplogin-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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