Ransomware Research

Crypthus Ransomware

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

Quick facts

Ransomware Family
Crypthus
First Seen
June 1, 2025

How Crypthus ransomware works

File modification behavior

Crypthus updates file modification timestamps after encryption.

File encryption patterns

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

Extensions added after encryption
  • .crypthus

Ransom note and payment demands

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

filecrypthus.notice.txt
notes/crypthus.notice.txt

Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Crypthus ransomware:

  • go-remover.exe

About this analysis

This Crypthus 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 Crypthus.

Last updated: August 28, 2025

Detection coverage

Elastio detects Crypthus inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Crypthus 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.