Ransomware Research

Deep Ransomware

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

Quick facts

Ransomware Family
Deep
First Seen
September 1, 2023

How Deep ransomware works

File encryption patterns

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

Extensions added after encryption
.deep

Ransom note and payment demands

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

fileinfo.txt
notes/info.txt
Location: RootDiscs, Desktop
fileinfo.hta
notes/info.hta
Location: RootDiscs, Desktop

Technical indicators

Associated executable files

The following executable files are associated with Deep ransomware:

About this analysis

This Deep 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 Deep.

Last updated: December 30, 2025

Detection coverage

Elastio detects Deep inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Deep 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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What is Deep Ransomware? | Elastio