Ransomware Research

7ev3n Ransomware

7ev3n is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
7ev3n
First Seen
January 1, 2016

How 7ev3n ransomware works

File encryption patterns

7ev3n modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.R5A.R4A

Ransom note and payment demands

After encrypting files, 7ev3n displays ransom notes demanding payment for file recovery:

fileFILES_BACK.txt
notes/FILES_BACK.txt

About this analysis

This 7ev3n 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 7ev3n.

Last updated: December 30, 2025

Detection coverage

Elastio detects 7ev3n inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify 7ev3n 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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