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Malicious package

lbank-connector-pythonsPyPI

Advisory published Updated

lbank-connector-pythons is a confirmed malicious PyPI package (MAL-2025-191644) that steals credentials and exfiltrates sensitive data (malicious versions 2.0, 2.1, 2.2…). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in lbank-connector-pythons (PyPI)

MAL-2025-191644
Immediate action
Remove the package, then rotate any secrets the build/runtime could reach.
pip uninstall lbank-connector-pythons

What this malware does

This is a copy of a legit package with added basic exfiltration in the setup.py

Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: GENERIC-standard-pypi-install-pentest

Reasons (based on the campaign):

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • The package overrides the install command in setup.py to execute malicious code during installation.

Malicious versions

4 flagged
2.02.12.22.3

Indicators of compromise (SHA-256)

be860829dcedc2bf0981c76c1ea75b885957e544a964d28cf69695e3ee2ac9ed
a8ac8a9f87c9d93340528329867082207c0437ad9fe6d31408cf7754b5705ad9
8e2d03134723d75ab2f0b36c6acad54fa5d16b4ba0f04bf2705e188fd19626b9
50f436f344f514099ea2389611705259c9094e8f2f6a0faf819c43aa71987599
4582809a7633a72953e4b02ed264609834dec8a8df6efab777fb50fc9d0db89e

Detection & response playbook

Credential / info stealer
  1. Find it

    Search your lockfiles and build artifacts for lbank-connector-pythons (4 malicious versions).

  2. If you installed it — respond

    lbank-connector-pythons 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.

  3. Did it already run?

    If lbank-connector-pythons 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. lbank-connector-pythons on PyPI has been identified as a malicious package (versions 2.0, 2.1, 2.2, 2.3 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

RLMA-2025-05615GENERIC-standard-pypi-install-pentestRLUA-2026-00466

References

Credits

  • Kamil Mańkowski (kam193)
  • ReversingLabs · finder

Detect & block this

O3 blocks lbank-connector-pythons-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Explore

lbank-connector-pythons (PyPI) malicious package — MAL-2025-191644 | O3 Security