Ransomware Research

PyteHole Ransomware

PyteHole 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
PyteHole
First Seen
April 1, 2017

How PyteHole ransomware works

File encryption patterns

PyteHole modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.adr

Technical indicators

Associated executable files

The following executable files are associated with PyteHole ransomware:

About this analysis

This PyteHole 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 PyteHole.

Last updated: December 30, 2025

Detection coverage

Elastio detects PyteHole inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify PyteHole 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.

See How the Hunt Engine WorksRequest a Demo

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