Ransomware Research
RaRuCrypt Ransomware
RaRuCrypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- RaRuCrypt
- First Seen
- February 1, 2018
How RaRuCrypt Ransomware Works
Targeted Files
Packs files with rar encrypted archive
File Encryption Patterns
RaRuCrypt modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..rarRansom Note and Payment Demands
After encrypting files, RaRuCrypt displays ransom notes demanding payment for file recovery:
/^README\d{1,2}\.TXT$/Ransom message:
notes/README1.TXT
Note locations:
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About This Analysis
This RaRuCrypt 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 RaRuCrypt.
Last updated: July 30, 2025