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Xorist Ransomware (.locks)

  • Distribution Method : Unknown
 
  • MD5 : a11f068c15364b7d0d49d604833cf1e2
 
  • Major Detection Name : Trojan.TR/Ransom.Xorist.EJ (F-Secure), W32/Xorist.DD8C!tr.ransom (Fortinet)
 
  • Encrypted File Pattern : .locks
 
  • Malicious File Creation Location :
     - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp\HOW TO DECRYPT FILES.txt
     - C:\Users\%UserName%\AppData\Local\Temp\oVRGpPL614g4PEi.exe
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HOW TO DECRYPT FILES.txt
 
  • Payment Instruction File : HOW TO DECRYPT FILES.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Boom / Xorist-Frozen Ransomware series
     - Change the encrypted file (.locks) icon (HKEY_CLASSES_ROOT\OPBILKBUWSSDZCF)

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