Ransomware Research

Sauron Ransomware

Sauron is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2024, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Sauron
First Seen
October 1, 2024

How Sauron ransomware works

File encryption patterns

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

Extensions added after encryption
.Sauron

Ransom note and payment demands

After encrypting files, Sauron displays ransom notes demanding payment for file recovery:

file#HowToRecover.txt
notes/#HowToRecover.txt
Location: EveryFolder
screenshot
notes/background.png
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Sauron ransomware:

About this analysis

This Sauron 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 Sauron.

Last updated: December 30, 2025

Detection coverage

Elastio detects Sauron inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Sauron 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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What is Sauron Ransomware? | Elastio