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Matrix Ransomware (<Original Filename>.<Original Extension> / What_Happened_With_Files.rtf)

  • Distribution Method : Automatic infection using exploit by visiting website
  • MD5 : de40445dcaf0c7c272d6859ed11e1418
  • Major Detection Name : a variant of Win32/Kryptik.GABT (ESET), (Kaspersky)
  • Encrypted File Pattern : <Original Filename>.<Original Extension>
  • Malicious File Creation Location :
         - C:\Users\%UserName%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\<Random>\<Random>.cmd
         - C:\Users\%UserName%\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\<Random>\index[Number].htm
         - C:\Users\%UserName%\AppData\Roaming\<Random>.vbs
  • Payment Instruction File : What_Happened_With_Files.rtf / What_Happened_With_Files1.rtf ~ What_Happened_With_Files50.rtf
  • Major Characteristics :
         - Offline Encryption
         - Change the default values of the registry entry "HKEY_CLASSES_ROOT\mscfile\shell\open\command" and 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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