Ransomware Research
Mike NotSTOP! Ransomware
Mike NotSTOP! is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: "Mike NotSTOP!", HildaCrypt-Stahp.
Quick Facts
- Ransomware Family
- Mike NotSTOP!
- First Seen
- October 1, 2019
- Known Aliases
- "Mike NotSTOP!"HildaCrypt-Stahp
How Mike NotSTOP! Ransomware Works
File Encryption Patterns
Mike NotSTOP! modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..mikeRansom Note and Payment Demands
After encrypting files, Mike NotSTOP! displays ransom notes demanding payment for file recovery:
_readme.txtRansom message:
notes/_readme.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Mike NotSTOP! ransomware:
34gfwhqjjgtuiudu.exe
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About This Analysis
This Mike NotSTOP! 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 Mike NotSTOP!.
Last updated: July 30, 2025