Ransomware Research
YYTO Ransomware
YYTO is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- YYTO
- First Seen
- May 1, 2017
How YYTO Ransomware Works
Targeted Files
https://www.bleepingcomputer.com/forums/t/663424/infect-by-ransomware-martinabrmqousacomvagg/ Full extensions -> .read_to_txt_file.juuj;.albertkerr94@mail.com.m5m5;.read@help.txt.L1LL
File Encryption Patterns
YYTO modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..YYTO
..juuj
..m5m5
..b007
..gr3g
..vagg
..m6m6
..hrhr
..iuiu
..ovgm
..mkmk
..yyy0
..L1LL
..mo7n
..fftn
Ransom Note and Payment Demands
After encrypting files, YYTO displays ransom notes demanding payment for file recovery:
help_to_decrypt.txt
Ransom message:
notes/help_to_decrypt.txt
Note locations:
EveryFolder
help.txt
Ransom message:
notes/help.txt
Readme.txt
Ransom message:
notes/Readme.txt
readme.txt
Ransom message:
notes/readme.txt
Help.txt
Ransom message:
notes/Help.txt
Note locations:
EveryFolder
Technical Indicators
Associated Executable Files
The following executable files are associated with YYTO ransomware:
svchost.exe
Intel.exe
RS01bz.exe
Elastio Can Help You
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About This Analysis
This YYTO 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 YYTO.
Last updated: July 30, 2025