Ryuk.Net is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Chaos.
Quick Facts
Ransomware Family
Ryuk.Net
First Seen
June 1, 2021
Known Aliases
Chaos
How Ryuk.Net Ransomware Works
Targeted Files
https://marcoramilli.com/2021/06/14/the-allegedly-ryuk-ransomware-builder-ryukjoke/
4fbbd67a32384a485efb0efb9e958a9f7b7a879d3945b16ccf80a8580bd935a7 must be named /Users/qq/AppData/Roaming/svchost.exe
https://blogs.blackberry.com/en/2022/05/yashma-ransomware-tracing-the-chaos-family-tree
File Encryption Patterns
Ryuk.Net modifies encrypted files using specific patterns to mark them as encrypted:
This Ryuk.Net ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like Ryuk.Net.