file_README_Yurei.txt
notes/_README_Yurei.txt
Location: UserFolders
Ransomware Research
Yurei Ransomware
Yurei is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Yurei
- First Seen
- September 1, 2025
How Yurei ransomware works
File modification behavior
Yurei updates file modification timestamps after encryption.
File encryption patterns
Yurei modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .Yurei
Ransom note and payment demands
After encrypting files, Yurei displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with Yurei ransomware:
- Yurei.exe
About this analysis
This Yurei 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 Yurei.
Detection coverage
Elastio detects Yurei inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Yurei 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.