Ransomware Research
MZP Ransomware
MZP 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: Unnamed [31.12.19].
Quick Facts
- Ransomware Family
- MZP
- First Seen
- December 1, 2019
- Known Aliases
- Unnamed [31.12.19]
How MZP Ransomware Works
Targeted Files
https://app.any.run/tasks/56248422-b327-4226-8a79-3155e24b999d/ https://app.any.run/tasks/93bd2dc2-42ce-4973-8466-06724095b3f1/
File Encryption Patterns
MZP modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[a-z]{8}$/Ransom Note and Payment Demands
After encrypting files, MZP displays ransom notes demanding payment for file recovery:
HOW TO RESTORE ENCRYPTED FILES.TXTRansom message:
notes/HOW TO RESTORE ENCRYPTED FILES.TXT
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with MZP ransomware:
01.bin01.exe
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About This Analysis
This MZP 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 MZP.
Last updated: July 30, 2025