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

  • Distribution Method : Unknown
 
  • MD5 : 6224156f14a8d05dbaacbaa1c27acf33
 
  • Major Detection Name : Trojan.Ransom.KrakenCryptor (ALYac), Ransom.Win32.KRAKEN.THOAAFAI (Trend Micro)
 
  • Encrypted File Pattern : .mdk4y
 
  • Malicious File Creation Location :
     - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\HOW_TO_RETURN_FILES.txt
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HOW_TO_RETURN_FILES.txt
 
  • Payment Instruction File : HOW_TO_RETURN_FILES.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Block processes execution (1cv7.exe, 1cv7s.exe, 1cv8.exe, 1cv8s.exe)
     - Stop multi services (Acronis VSS Provider, IISAdmin, MSSQLSERVER, Sophos Agent, SQLsafe Backup Service, Symantec System Recovery etc.)
     - Disable system restore (wmic shadowcopy delete)

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