Ransomware Research

Pres Ransomware

Pres is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Pres
First Seen
April 1, 2025

How Pres ransomware works

File encryption patterns

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

Extensions added after encryption
.pres

Ransom note and payment demands

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

fileinfo.txt
notes/info.txt
Location: RootDiscs, Desktop
fileInfo.hta
notes/Info.hta
Location: StartUp, Roaming

Technical indicators

Associated executable files

The following executable files are associated with Pres ransomware:

About this analysis

This Pres 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 Pres.

Last updated: December 30, 2025

Detection coverage

Elastio detects Pres inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Pres 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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