Ransomware Research
Cryptre Ransomware
Cryptre is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Cryptre
- First Seen
- December 1, 2018
How Cryptre Ransomware Works
Targeted Files
original_file_name.encrypted.original_file_extension
Ransom Note and Payment Demands
After encrypting files, Cryptre displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
LoginTechnical Indicators
Associated Executable Files
The following executable files are associated with Cryptre ransomware:
Windows Update.exe
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About This Analysis
This Cryptre 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 Cryptre.
Last updated: July 30, 2025