Ransomware Research

FridayBoycrazy Ransomware

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

Quick facts

Ransomware Family
FridayBoycrazy
First Seen
March 1, 2024

How FridayBoycrazy ransomware works

File encryption patterns

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

Extensions added after encryption
./\.[a-z-0-9]{4}$/

Ransom note and payment demands

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

fileWarning
notes/Warning
Location: EveryFolder
screenshot
notes/zkn66kzl1.jpg
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with FridayBoycrazy ransomware:

About this analysis

This FridayBoycrazy 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 FridayBoycrazy.

Last updated: December 30, 2025

Detection coverage

Elastio detects FridayBoycrazy inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify FridayBoycrazy 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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