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Magniber Ransomware (.fprgbk / READ_ME_FOR_DECRYPT_<Random>_.txt)

  • Distribution Method : Automatic infection using exploit by visiting website
 
  • MD5 : cadf470a9e34d442d74fc7572ac45cfb
 
  • Major Detection Name : Generic.Ransom.Magniber.F8E5B4A7 (BitDefender), a variant of Win32/Filecoder.Magniber.A (ESET)
 
  • Encrypted File Pattern : .fprgbk
 
  • Malicious File Creation Location :
         - C:\Users\%UserName%\AppData\Local\Temp\fprgbk.exe
         - C:\Users\%UserName%\Desktop\READ_ME_FOR_DECRYPT_<Random>_.txt
         - C:\Users\%UserName%\Desktop\<Random>.exe
         - C:\Windows\System32\Tasks\fprgbk
         - C:\Windows\System32\Tasks\<Random>
 
  • Payment Instruction File : READ_ME_FOR_DECRYPT_<Random>_.txt
 
  • Major Characteristics :
         - Offline Encryption
         - Run only on Korean operating system
         - Auto execute ransomware (pcalua.exe -a %Temp%\fprgbk.exe) and payment instrucition file (%Temp%\READ_ME_FOR_DECRYPT_<Random>_.txt) every 15 minutes by adding Task Scheduler entries

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