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Osno Ransomware (<Original Filename>.osnoed)

  • Distribution Method : Unknown
 
  • MD5 : 62327bef9782540580f59f3f691cd692
 
  • Major Detection Name : Win32:CrypterX-gen [Trj] (Avast), Ransom.MSIL.OSNO.AA (Trend Micro)
 
  • Encrypted File Pattern : <Original Filename>.osnoed
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Local\Temp\<Random Fildername>
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random Fildername>
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Desktop.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Documents.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Downloads.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Pictures.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Startup.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Temp.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\Dirs\Videos.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\hardware & soft.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\others.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\processes.txt
     - C:\Users\%UserName%\AppData\Local\Temp\<Random>\<Random>\screen.jpeg
     - C:\Users\MX2081\AppData\Local\Temp\gpustats.bx
     - C:\Users\%UserName%\Desktop\Osno Decryptor.exe
 
  • Major Characteristics :
     - Offline Encryption
     - File destruction using "CC:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
     - Destruction of files at the level of 1KB file size
     - Collects file/folder list, screen screenshot, hardware/software information, process information.

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