IOC: Execution of rundll32.exe with 'ImageView_Fullscreen' and a protocol handler ('://') on the command line
Download
Once executed, rundll32.exe will download the file at the URL in the command to %LOCALAPPDATA%\Microsoft\Windows\INetCache\IE\<random>\payload[1].exe. Can also be used with entrypoint 'ImageView_FullscreenA'.