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CryptoMix Ransomware (<Random Filename>.arena)

  • Distribution Method : Unknown
 
  • MD5 : b7615c33349699758035fa509676b693
 
  • Major Detection Name : Win32/Filecoder.HydraCrypt.M (ESET), Ransom_CRYPAURA.OGONIB (Trend Micro)
 
  • Encrypted File Pattern : <Random Filename>.arena
 
  • Malicious File Creation Location : C:\ProgramData\<Random>.exe
 
  • Payment Instruction File : _HELP_INSTRUCTION.TXT
 
  • Major Characteristics :
         - Offline Encryption
         - CryptFile2 / CryptoShield / HydraCrypt / Mole / Revenge / Zeta Ransomware series
         - Stop system services (sc stop BITS, sc stop ERSvc, sc stop VVS, sc stop WerSvc, sc stop WinDefend, sc stop wscsvc, sc stop wuauserv)
         - Disable system restore (vssadmin.exe Delete Shadows /All /Quiet, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures)

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