Ransomware Research

EOEO Ransomware

EOEO is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
EOEO
First Seen
August 1, 2018

How EOEO ransomware works

File encryption patterns

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

Extensions added after encryption
.eoeo

Ransom note and payment demands

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

fileReadme.lol
notes/Readme.lol
Location: RootDiscs, Desktop, ProgramData, LocalApplicationData

Technical indicators

Associated executable files

The following executable files are associated with EOEO ransomware:

About this analysis

This EOEO 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 EOEO.

Last updated: December 30, 2025

Detection coverage

Elastio detects EOEO inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify EOEO 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 EOEO Ransomware? | Elastio