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Matrix Ransomware (<Random>-<Random>.[JUCHE001@TUTANOTA.COM])

  • Distribution Method : Automatic infection using exploit by visiting website
 
  • MD5 : 506f7fad086e8abcdc7c920ba1675f49
 
  • Major Detection Name : a variant of Win32/Kryptik.FYIT (ESET), Ransom:Win32/Delcryset.A (Microsoft)
 
  • Encrypted File Pattern : <Random>-<Random>.[JUCHE001@TUTANOTA.COM]
 
  • Malicious File Creation Location :
         - C:\Users\%UserName%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\<Random>\index<Random>.htm
         - C:\Users\%UserName%\AppData\Roaming\<Random>.vbs
 
  • Payment Instruction File : #_#Where-is-my-files#_#!.rtf
 
  • Major Characteristics :
         - Offline Encryption
         - Change the default values of the registry entry "HKEY_CLASSES_ROOT\mscfile\shell\open\command"
         - Disable system restore (vssadmin.exe delete shadows /all /quiet) using Event Viewer (eventvwr.exe)
         - Changes desktop background (C:\Users\%UserName%\AppData\Roaming\<Random>.jpg)

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