Ransomware Research
Press Ransomware
Press is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2023, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Dwarf, Spfre.
Quick Facts
- Ransomware Family
- Press
- First Seen
- December 1, 2023
- Known Aliases
- DwarfSpfre
How Press Ransomware Works
Targeted Files
NOSAMPLE https://www.bleepingcomputer.com/forums/t/792778/press-ransomware-press-spfre;-recovery-nfotxt-support-topic/
File Encryption Patterns
Press modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..dwarf..press..spfreRansom Note and Payment Demands
After encrypting files, Press displays ransom notes demanding payment for file recovery:
RECOVERY NFO.txtRansom message:
notes/RECOVERY NFO.txt
All your important files are encrypted!.txtRansom message:
notes/All your important files are encrypted!.txt
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About This Analysis
This Press 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 Press.
Last updated: July 30, 2025