Ransomware Research

Stolen Ransomware

Stolen is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Stolen
First Seen
February 1, 2023

How Stolen ransomware works

File encryption patterns

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

Extensions added after encryption
.stolen

Ransom note and payment demands

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

file+README-WARNING+.txt
notes/+README-WARNING+.txt
Location: EveryFolder
screenshot
notes/7742.tmp.bmp
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Stolen ransomware:

About this analysis

This Stolen 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 Stolen.

Last updated: December 30, 2025

Detection coverage

Elastio detects Stolen inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Stolen 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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