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Matrix Ransomware (No Change / !What-wrong-with-files!.rtf)

  • Distribution Method : Automatic infection using exploit by visiting website
 
  • MD5 : 84a5d11df3f4099b85c3929377de801d
 
  • Major Detection Name : Trojan/Win32.Matrixran.R206767 (AhnLab V3), a variant of Win32/Kryptik.FVNF (ESET)
 
  • Encrypted File Pattern : No Change
 
  • Malicious File Creation Location :
         - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\<Random>.hta
         - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\<Random>.lnk
         - C:\Users\%UserName%\AppData\Local\Microsoft\<Random>.exe
         - C:\Users\%UserName%\AppData\Local\Temp\<Random>.exe
         - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\<Random>.hta
         - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\<Random>.lnk
         - C:\Users\%UserName%\AppData\Roaming\Microsoft\<Random>.exe
         - C:\Users\%UserName%\AppData\Roaming\<Random Folder>
         - C:\Users\%UserName%\AppData\Roaming\<Random>\<Random>.cmd
         - C:\Users\%UserName%\AppData\Roaming\<Random>\<Random>.exe
         - C:\Users\%UserName%\AppData\Roaming\<Random>.hta
 
  • Payment Instruction File : !What-wrong-with-files!.rtf / !What-wrong-with-files!1.rtf ~ !What-wrong-with-files!50.rtf / <Random>.hta
 
  • Major Characteristics :
         - Offline Encryption
         - Change the default values of the registry entry "HKEY_CLASSES_ROOT\mscfile\shell\open\command" and a ransomware execution using Event Viewer (eventvwr.exe)
         - Disable system restore (vssadmin.exe delete shadows /all /quiet)

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