Ransomware Research

BTCWare-Gryphon Ransomware

BTCWare-Gryphon 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: Gryphon.

Quick Facts

Ransomware Family
BTCWare-Gryphon
First Seen
July 1, 2017
Known Aliases
Gryphon

How BTCWare-Gryphon Ransomware Works

Targeted Files

Full extension -> .[universe1@protonmail.ch].gryphon

File Encryption Patterns

BTCWare-Gryphon modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..gryphon..crypton..nuclear

Ransom Note and Payment Demands

After encrypting files, BTCWare-Gryphon displays ransom notes demanding payment for file recovery:

fileHELP.txt

Ransom message:

notes/HELP.txt

Note locations:

Roaming
file!## DECRYPT FILES ##!.txt

Ransom message:

notes/!## DECRYPT FILES ##!.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with BTCWare-Gryphon ransomware:

  • clickmeplz.exe
  • JKHFSHSHTUYOERSK.exe
  • 1.exe
  • Underkeeper2
  • Underkeeper2.exe
  • btcware2.exe
  • adiks.exe
  • x.exe
  • Regshot Portable
  • RegshotPortable.exe

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About This Analysis

This BTCWare-Gryphon 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 BTCWare-Gryphon.

Last updated: July 30, 2025

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