Ransomware Research
NOOSE Ransomware
NOOSE is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- NOOSE
- First Seen
- January 1, 2024
How NOOSE Ransomware Works
File Encryption Patterns
NOOSE modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..NOOSERansom Note and Payment Demands
After encrypting files, NOOSE displays ransom notes demanding payment for file recovery:
OPEN_ME.txtRansom message:
notes/OPEN_ME.txt
Note locations:
EveryFolderRansom message:
notes/tezmcl52h.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with NOOSE ransomware:
Chaos Ransomware Builder v4.exe8262284.exesvchost.exe
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About This Analysis
This NOOSE 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 NOOSE.
Last updated: July 30, 2025