Ransomware Research
Sifreli 2017 Ransomware
Sifreli 2017 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Sifreli.
Quick Facts
- Ransomware Family
- Sifreli 2017
- First Seen
- July 1, 2017
- Known Aliases
- Sifreli
How Sifreli 2017 Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
Sifreli 2017 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sifreliRansom Note and Payment Demands
After encrypting files, Sifreli 2017 displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
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About This Analysis
This Sifreli 2017 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 Sifreli 2017.
Last updated: July 30, 2025