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

File modification behavior

Reopen updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .reopen

Ransom note and payment demands

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

fileINFORMATION.txt
notes/INFORMATION.txt

Location: RootDiscs

About this analysis

This Reopen 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 Reopen.

Last updated: June 8, 2023

Detection coverage

Elastio detects Reopen inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Reopen across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.