Ransomware Research
Rapid-3 Ransomware
Rapid-3 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Rapid 3.0.
Quick Facts
- Ransomware Family
- Rapid-3
- First Seen
- May 1, 2018
- Known Aliases
- Rapid 3.0
How Rapid-3 Ransomware Works
File Encryption Patterns
Rapid-3 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[A-Z]{5}$/Ransom Note and Payment Demands
After encrypting files, Rapid-3 displays ransom notes demanding payment for file recovery:
/^DECRYPT\.[A-Z]{5}\.txt$/Ransom message:
notes/DECRYPT.MMHRZ.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with Rapid-3 ransomware:
S4HoQm3YcP.exeF0CE24EC42F503F8.exe3019F576F197CAB9.exe333C8BA7290C8884.exe
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About This Analysis
This Rapid-3 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 Rapid-3.
Last updated: July 30, 2025