CryptoNar Ransomware
CryptoNar is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: CryptoJoker 2018.
Quick facts
How CryptoNar ransomware works
File encryption patterns
CryptoNar modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, CryptoNar displays ransom notes demanding payment for file recovery:
notes/CRYPTONAR RECOVERY INFORMATION.txt
Technical indicators
Associated executable files
The following executable files are associated with CryptoNar ransomware:
- CryptoNar.exe
- myfile.exe
- asdfc4.exe
About this analysis
This CryptoNar 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 CryptoNar.
Last updated: December 30, 2025
Elastio detects CryptoNar inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify CryptoNar 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.
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