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:

filehelp_to_decrypt.txt

Ransom message:

notes/help_to_decrypt.txt

Note locations:

EveryFolder
filehelp.txt

Ransom message:

notes/help.txt
fileReadme.txt

Ransom message:

notes/Readme.txt
filereadme.txt

Ransom message:

notes/readme.txt
fileHelp.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

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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

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