Ransomware Research

Paradise Ransomware

Paradise is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Paradise unencrypted, Paradise decrypted, Paradise .NET, Paradise 2020.

Quick facts

Ransomware Family
Paradise
First Seen
September 1, 2017
Known Aliases
Paradise unencryptedParadise decryptedParadise .NETParadise 2020

How Paradise ransomware works

File encryption patterns

Paradise modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.ransom.NewCore.{admin@prt-decrypt.xyz}.xyz.logger.sev.paradise.sell.prt.b29.VACv2.CORP.STUB.p3rf0rm4.securityP.Recognizer.exploit.sambo.junior.safe.kiss.2k19sys.bitcore.b1.rdp.payload.ebal.njkwe.777.FC.iskaluz.honkai._decryptor_{Pyigxu}.tor.immortal.2k19cry.r00t.mak._Kim Chin Im_{YyKVuO}.Im

Ransom note and payment demands

After encrypting files, Paradise displays ransom notes demanding payment for file recovery:

file#DECRYPT MY FILES#.txt
notes/#DECRYPT MY FILES#.txt
Location: EveryFolder
file#DECRYPT MY FILES#.html
notes/#DECRYPT MY FILES#.html
Location: EveryFolder
fileKEY BACKUP.txt
filePARADISE_README_paradise@all-ransomware.info.txt
notes/PARADISE_README_paradise@all-ransomware.info.txt
Location: EveryFolder
file/^#DECRYPT MY FILES# [a-zA-Z0-9]{8}\.html$/
notes/#DECRYPT MY FILES# vN6YLGIr.html
file$%%! NOTE ABOUT FILES -=!-.html
fileInstructions with your files.txt
notes/Instructions with your files.txt
Location: EveryFolder
file%= RETURN FILES =&.html
notes/%= RETURN FILES =&.html
Location: EveryFolder
file=_BACK_FILES_~.html
file%$ BACK FILES !#.html
file---%$$$OPEN_ME_UP$$$---.txt
notes/---%$$$OPEN_ME_UP$$$---.txt
file-=###_INFO_you_FILE_###=-.txt
notes/-=###_INFO_you_FILE_###=-.txt
Location: EveryFolder
file$%%! NOTE ABOUT FILES -=!-.html
notes/$%%! NOTE ABOUT FILES -=!-.html
Location: EveryFolder
file---==%$$$OPEN_ME_UP$$$==---.txt
notes/---==%$$$OPEN_ME_UP$$$==---.txt
Location: EveryFolder
file/^[a-zA-Z0-9]{20,30}\.hta$/
notes/A3QloxkZlkV7avmKdHILo5qUEQez.hta
Location: StartUp
file$&#~! README =$-!=.html
file%%_WHERE_MY_FILES_=#.html
notes/%%_WHERE_MY_FILES_=#.html
Location: EveryFolder
file—==%$$$OPEN_ME_UP$$$==—.txt
Location: EveryFolder
filenooode.txt
notes/nooode.txt

Technical indicators

Associated executable files

The following executable files are associated with Paradise ransomware:

About this analysis

This Paradise ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Paradise.

Last updated: December 30, 2025

Detection coverage

Elastio detects Paradise inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Paradise across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

See How the Hunt Engine WorksRequest a Demo

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