Ransomware Research
Mao Ransomware
Mao is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Mao
- First Seen
- January 1, 2023
How Mao Ransomware Works
Targeted Files
Full extension -> .id-C63F241F.[sony.mao@techmail.info].mao
File Encryption Patterns
Mao modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..maoRansom Note and Payment Demands
After encrypting files, Mao displays ransom notes demanding payment for file recovery:
info.txtRansom message:
notes/info.txt
Note locations:
RootDiscsDesktopInfo.htaRansom message:
notes/Info.hta
Note locations:
StartUpRoamingTechnical Indicators
Associated Executable Files
The following executable files are associated with Mao ransomware:
program.exeexecutable.exe
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About This Analysis
This Mao 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 Mao.
Last updated: July 30, 2025