Ransomware Research
Sapphire Ransomware
Sapphire is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Sapphire
- First Seen
- September 1, 2019
How Sapphire Ransomware Works
File Encryption Patterns
Sapphire modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sapphire..fbiRansom Note and Payment Demands
After encrypting files, Sapphire displays ransom notes demanding payment for file recovery:
/^readme(-[1-4])?\.txt$/Ransom message:
notes/readme-4.txt
decryptfiles.htmlRansom message:
notes/decryptfiles.html
LOCKEDBYFBI.htaRansom message:
notes/LOCKEDBYFBI.hta
Ransom message:
notes/note.txt
Note locations:
LoginTechnical Indicators
Associated Executable Files
The following executable files are associated with Sapphire ransomware:
Sapphire Ransomware.exeCredit Card Frauder.exe
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About This Analysis
This Sapphire 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 Sapphire.
Last updated: September 30, 2025
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