UltraCrypter Ransomware
UltraCrypter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick facts
How UltraCrypter ransomware works
File encryption patterns
UltraCrypter modifies encrypted files using specific patterns to mark them as encrypted:
About this analysis
This UltraCrypter 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 UltraCrypter.
Last updated: December 30, 2025
Elastio detects UltraCrypter inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify UltraCrypter 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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