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Check out our video library AppCheck defending against newest ransomware, automatic recovery and real-time backup.

  • Distribution Method : Automatic infection using exploit by visiting website
 
  • MD5 : c0b0d8a5a590b4e527e6e565f63cea80
 
  • Major Detection Name : Trojan/Win32.Magniber.R215258 (AhnLab V3), a variant of Win32/Kryptik.GAML (ESET)
 
  • Encrypted File Pattern : .cmqhwtdhx
 
  • Malicious File Creation Location :
         - C:\Users\%UserName%\AppData\Local\READ_FOR_DECRYPT.txt
         - C:\Users\%UserName%\AppData\Local\cmqhwtdhx.exe
         - C:\Users\%UserName%\Desktop\<Random>.exe
         - C:\Windows\System32\Tasks\cmqhwtdhx
         - C:\Windows\System32\Tasks\<Random>
         - C:\Windows\System32\Tasks\<Random>1
 
  • Payment Instrucition File : READ_FOR_DECRYPT.txt
 
  • Major Characteristics :
         - Offline Encryption
         - Only run on Korean operating system
         - Change the default values of the registry entry "HKEY_CLASSES_ROOT\mscfile\shell\open\command" and disable system restore (wmic shadowcopy delete) using Event Viewer (eventvwr.exe)
         - Auto execute ransomware (pcalua.exe -a %LocalAppData%\cmqhwtdhx.exe -c <Random>) and payment instrucition file (%LocalAppData%\READ_FOR_DECRYPT.txt) every 15 minutes by adding Task Scheduler entries
         - Auto connect MY DECRYPTOR site (cmd.exe /c start iexplore http://<URL>) every a hour by adding Task Scheduler entries

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