Ransomware Research

Reopen Ransomware

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

Quick Facts

Ransomware Family
Reopen
First Seen
March 1, 2023

How Reopen Ransomware Works

Targeted Files

Full extension -> .[Reopenthefile@gmail.com][MJ-AF3697128504].reopen

File Encryption Patterns

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

File extensions added after encryption:

..reopen

Ransom Note and Payment Demands

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

fileINFORMATION.txt

Ransom message:

notes/INFORMATION.txt

Note locations:

RootDiscs

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About This Analysis

This Reopen ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Reopen.

Last updated: July 30, 2025

Reopen Ransomware - Detectable by Elastio