VYPR

pypi · Malicious package advisory

Malware

smtblib

MAL-2025-192579

Malicious code in smtblib (PyPI)

Details


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## Source: kam193 (15a295f1d98fcbbdd6a077bc3a849966ca3f73919c0d47e58948ff382481e5b6)
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.


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


Campaign: 2025-12-smtblib


Reasons (based on the campaign):


 - Downloads and executes a remote malicious script.


 - infostealer


 - target:telegram


 - exfiltration-credentials


 - action-hidden-in-lib-usage


 - covering-tracks


 - clones-real-package


 - typosquatting

Compromised versions (2)

  • 0.1.8
  • 0.1.9

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.