Ransomware Research

Python-Client Ransomware

Python-Client is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Python-Client
First Seen
April 1, 2017

Ransom note and payment demands

After encrypting files, Python-Client displays ransom notes demanding payment for file recovery:

fileNOTE.html
notes/NOTE.html
Location: RansomPayloadStartFolder

Technical indicators

Associated executable files

The following executable files are associated with Python-Client ransomware:

About this analysis

This Python-Client ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Python-Client.

Last updated: December 30, 2025

Detection coverage

Elastio detects Python-Client inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Python-Client across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

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What is Python-Client Ransomware? | Elastio