Ransomware Research

LuckyJoe Ransomware

LuckyJoe is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2019, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
LuckyJoe
First Seen
July 1, 2019

How LuckyJoe ransomware works

File encryption patterns

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

Extensions added after encryption
.GNNCRY

Ransom note and payment demands

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

fileGNNCRY_Readme
notes/GNNCRY_Readme

Technical indicators

Associated executable files

The following executable files are associated with LuckyJoe ransomware:

About this analysis

This LuckyJoe 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 LuckyJoe.

Last updated: December 30, 2025

Detection coverage

Elastio detects LuckyJoe inside your data and backups.

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