Ransomware Research
Sfile Ransomware
Sfile is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Sfile2, Sfile3, Escal, Sfile NextGen.
Quick Facts
- Ransomware Family
- Sfile
- First Seen
- April 1, 2020
- Known Aliases
- Sfile2Sfile3EscalSfile NextGen
How Sfile Ransomware Works
File Encryption Patterns
Sfile modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..sfile2..sfile3..cityzone-nq7wcqgl..laposada-bfkruyz..AFR-6fyvilv..nissenvelten-sjj3hhutRansom Note and Payment Demands
After encrypting files, Sfile displays ransom notes demanding payment for file recovery:
!!_FILES_ENCRYPTED_.txtRansom message:
notes/!!_FILES_ENCRYPTED_.txt
Note locations:
EveryFolderhow restore hurt documents.infRansom message:
notes/how restore hurt documents.inf
Note locations:
EveryFolderreadme_to BRN.infRansom message:
notes/readme_to BRN.inf
Note locations:
EveryFolder!!LAZPARKING-MESSAGE.txthow_decipher hurt data.infRansom message:
notes/how_decipher hurt data.inf
Note locations:
EveryFoldermessage_to fmiint.logRansom message:
notes/message_to fmiint.log
!!laposada_howtodecipher.infreadme_to AFR.logTechnical Indicators
Associated Executable Files
The following executable files are associated with Sfile ransomware:
ransomware.binTrojanWin32Occamy.CD3.exeransomware.exeпункты назначениягрузы.xlsx.exewebroot_updater.exeransomwareq5.exersa_enc_FreeBSD_x64hg.exeSystemScheduleHost.exe
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About This Analysis
This Sfile 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 Sfile.
Last updated: July 30, 2025