Rhysida Ransomware
Rhysida is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick facts
How Rhysida ransomware works
File encryption patterns
Rhysida modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, Rhysida displays ransom notes demanding payment for file recovery:
notes/CriticalBreachDetected.pdf
About this analysis
This Rhysida 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 Rhysida.
Last updated: December 30, 2025
Elastio detects Rhysida inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Rhysida 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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