fileinfo-Locker.txt
notes/info-Locker.txt
Location: UserFolders
Ransomware Research
X4ION Ransomware
X4ION is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2026, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- X4ION
- First Seen
- April 1, 2026
How X4ION ransomware works
File modification behavior
X4ION updates file modification timestamps after encryption.
File encryption patterns
X4ION modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .X4IONCrypted
- .locked
Ransom note and payment demands
After encrypting files, X4ION displays ransom notes demanding payment for file recovery:
Technical indicators
Associated executable files
The following executable files are associated with X4ION ransomware:
- lc.exe
- UXCryptor.exe
- WindowsUpdate.exe
About this analysis
This X4ION 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 X4ION.
Detection coverage
Elastio detects X4ION inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify X4ION 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.