Ransomware Research
7ev3n Ransomware
7ev3n is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- 7ev3n
- First Seen
- January 1, 2016
How 7ev3n Ransomware Works
Targeted Files
Doesn't encrypt files on the %SYSTEMDRIVE%
File Encryption Patterns
7ev3n modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..R5A..R4ARansom Note and Payment Demands
After encrypting files, 7ev3n displays ransom notes demanding payment for file recovery:
FILES_BACK.txtRansom message:
notes/FILES_BACK.txt
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About This Analysis
This 7ev3n 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 7ev3n.
Last updated: July 30, 2025