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Ransomware Research
Crypton Ransomware
Crypton is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Crypton
- First Seen
- November 1, 2016
How Crypton Ransomware Works
Targeted Files
Requires C&C to receive key and other data {original filename}_crypt{original extension} c84a02a0b3cfe2af4c0c04c7ca69351a41501034bde0bb682ecb884b4e8aa36c -> OK (doesnt change filenames)
File Encryption Patterns
Crypton modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
._steaveiwalker@india.com_
Ransom Note and Payment Demands
After encrypting files, Crypton displays ransom notes demanding payment for file recovery:
readme_encrypted.txt
Ransom message:
notes/readme_encrypted.txt
Note locations:
Desktop
COMO_ABRIR_ARQUIVOS.txt
Ransom message:
notes/COMO_ABRIR_ARQUIVOS.txt
Note locations:
EveryFolder
README.TXT
Ransom message:
notes/README.TXT
Note locations:
EveryFolder
Ransom message:
notes/note.txt
Note locations:
Login
Technical Indicators
Associated Executable Files
The following executable files are associated with Crypton ransomware:
Crypton.exe
a.exe
crypton.exe
777.exe
Dloader_exe.exe
Фотоматериалы_архив.exe
Elastio Can Help You
Don't let Crypton ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This Crypton 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 Crypton.
Last updated: July 30, 2025