Ransomware Research
Nozelesn Ransomware
Nozelesn is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Nozelesn
- First Seen
- July 1, 2018
How Nozelesn Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Nozelesn modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..nozelesnRansom Note and Payment Demands
After encrypting files, Nozelesn displays ransom notes demanding payment for file recovery:
HOW_FIX_NOZELESN_FILES.htmRansom message:
notes/HOW_FIX_NOZELESN_FILES.htm.txt
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About This Analysis
This Nozelesn 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 Nozelesn.
Last updated: July 30, 2025