Ransomware Research

FLKR Ransomware

FLKR is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Morf56, JabberLover, Jackpot.

Quick Facts

Ransomware Family
FLKR
First Seen
December 1, 2016
Known Aliases
Morf56JabberLoverJackpot

How FLKR Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

._morf56@meta.ua_.+superuser111@0nl1ne.at.+jabber-hellobuddy@sj.ms.+jabber-winnipyh123@sj.ms.+jabber-theone@safetyjabber.com.+jackpot@jabber.cd._bigdick333@jabber.cd.+cccrraab@jabber.cd

Ransom Note and Payment Demands

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

fileINSTR.txt

Ransom message:

notes/INSTR.txt
fileINSTRUCTION.txt

Ransom message:

notes/INSTRUCTION.txt

Note locations:

EveryFolder
fileINSTRUCTIONX.txt

Ransom message:

notes/INSTRUCTIONX.txt
fileINSTRUCTIONS.txt

Ransom message:

notes/INSTRUCTIONS.txt
fileINSTRUCT.txt

Ransom message:

notes/INSTRUCT.txt

Technical Indicators

Associated Executable Files

The following executable files are associated with FLKR ransomware:

  • flkr.exe.bin
  • flkr.exe
  • winmonitor
  • winsysmon.exe

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About This Analysis

This FLKR 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 FLKR.

Last updated: October 30, 2025

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