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

  • Distribution Method : Tampered software installation file
 
  • MD5 : 6826c287f78462c8dd70a6fb3731768f
 
  • Major Detection Name : Win-Trojan/Delphiless.Exp (AhnLab V3), Trojan:Win32/Wacatac.D!ml (Microsoft)
 
  • Encrypted File Pattern : .ravack
 
  • Malicious File Creation Location :
     - C:\Program Files (x86)\Windows NT\Accessories\dwm.exe
     - C:\Users\%UserName%\Desktop\HELP_ME_RECOVER_MY_FILES.txt
 
  • Payment Instruction File : HELP_ME_RECOVER_MY_FILES.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Block processes execution (mspub.exe, mydesktopqos.exe, mydesktopservice.exe)
     - Stop multi services (avpsus, McAfeeDLPAgentService, SQLTELEMETRY, SQLTELEMETRY$ECWDB2, SQLWriter, SstpSvc etc.)
     - Disable system restore ("vssadmin.exe" Delete Shadows /all /quiet, "vssadmin.exe" resize shadowstorage /for=<Drive Letter>: /on=<Drive Letter>: /maxsize=401MB, "vssadmin.exe" resize shadowstorage /for=<Drive Letter>: /on=<Drive Letter>: /maxsize=unbounded)
     - Changes desktop background (C:\Users\%UserName%\AppData\Local\Temp\wallpaper.bmp)

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