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MALICIOUS (1) package from Python Package Index.

  1. The campaign has clearly malicious intent, like infostealers.

smtblib

Affected versions: (1) 0.1.8, 0.1.9

  1. Version numbers are usually added automatically. In most cases, the packages listed here were created only to distribute malicious code.

Campaign data

Campaign information may not always be 100% accurate for every related package.

Campaign description

Malicious copy of a standard library module that during class initialization downloads and executes remote code and after that attempts to cover its tracks by overwriting itself with non-malicious code. The remote code aims to collect and exfiltrate sensitive Telegram session files.

This campaign shares infrastructure and basic methods with previous 2025-11-uzip campaign.

See more details on the campaign page.

action-hidden-in-lib-usage

The malicious action is hidden in the code and starts when user interacts with it (e.g. during class initialization or by exfiltrating given credentials).

clones_real_package

The package is a clone of a legitimate package or library, but with malicious code added.

covering-tracks

The package contains code to cover its tracks, e.g. by deleting malicious code after execution.

exfiltration_credentials

The package attempts to steal credentials, like passwords or API keys.

infostealer

Activity is typical for information stealers, i.e. by exfiltrate various sensitive data from the victim's environment.

remote_script

Downloads and executes a remote malicious script.

target:telegram

Campaign targets target:telegram.

typosquatting

The package name is an typosquatting variant of a popular package.

Look up in other services

  1. May not be available. See more in pypi-json-data repository.
  2. Open Source Insights project, provided by Google.
  3. Service from Socket.dev, a cybersecurity company.
  4. Spectra Assure Community, a service from ReversingLabs, a cybersecurity company.
  5. Service from Snyk, a cybersecurity company.