Ransomware Research

MaMoCrypter Ransomware

MaMoCrypter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: MaMo434376, MaMo, MZ, MZRevenge.

Quick Facts

Ransomware Family
MaMoCrypter
First Seen
December 1, 2019
Known Aliases
MaMo434376MaMoMZMZRevenge

How MaMoCrypter Ransomware Works

File Encryption Patterns

MaMoCrypter modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..MaMo434376..MZ173801..Encrypted..Zv7uN

Ransom Note and Payment Demands

After encrypting files, MaMoCrypter displays ransom notes demanding payment for file recovery:

fileRead_ME_PLS.txt

Ransom message:

notes/Read_ME_PLS.txt

Note locations:

DesktopRootDirectory
fileHow Do I Recover My Files (Readme).txt

Ransom message:

notes/How Do I Recover My Files (Readme).txt

Note locations:

RootDirectoryUserFolders

Technical Indicators

Associated Executable Files

The following executable files are associated with MaMoCrypter ransomware:

  • 1.exe
  • Project.exe
  • svchost.exe
  • svchost_xnzhBzR.exe
  • Silici Temizliyici.exe
  • YARRRRRRRRRRRRRRRRRRRRAK.exe
  • svchost.vmps.exe
  • WindowsFormsApp.exe
  • WindowsFormsApp.bin
  • _RMAMO.exe
  • Cheats_Loader_protected.exe
  • Ransomware downloader yeni.bin
  • MaMoCrypter.exe
  • Ransomware downloader yeni.bin.exe

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About This Analysis

This MaMoCrypter 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 MaMoCrypter.

Last updated: October 30, 2025

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