Ransomware Research

D7k Ransomware

D7k is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
D7k
First Seen
April 1, 2023

How D7k ransomware works

File encryption patterns

D7k modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.D7k

Ransom note and payment demands

After encrypting files, D7k displays ransom notes demanding payment for file recovery:

filenote.txt
notes/note.txt
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with D7k ransomware:

About this analysis

This D7k 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 D7k.

Last updated: December 30, 2025

Detection coverage

Elastio detects D7k inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify D7k 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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