Ransomware Research
Kupidon Ransomware
Kupidon is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Kupidon
- First Seen
- May 1, 2020
How Kupidon Ransomware Works
Targeted Files
NOSAMPLE https://www.bleepingcomputer.com/forums/t/722584/kupidon-ransomware-kupidon;-kupidon-decrypttxt-support-topic/
File Encryption Patterns
Kupidon modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..kupidonRansom Note and Payment Demands
After encrypting files, Kupidon displays ransom notes demanding payment for file recovery:
!KUPIDON_DECRYPT.TXTRansom message:
notes/!KUPIDON_DECRYPT.TXT
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About This Analysis
This Kupidon 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 Kupidon.
Last updated: July 30, 2025