Ransomware Research

Yoshikada Ransomware

Yoshikada is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Yoshikada
First Seen
January 1, 2018

How Yoshikada ransomware works

File encryption patterns

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

Extensions added after encryption
.crypted_yoshikada@cock_lu

Ransom note and payment demands

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

filehow_to_back_files.html
notes/how_to_back_files.html.txt

Technical indicators

Associated executable files

The following executable files are associated with Yoshikada ransomware:

About this analysis

This Yoshikada 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 Yoshikada.

Last updated: December 30, 2025

Detection coverage

Elastio detects Yoshikada inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Yoshikada 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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