Who is changing the settings for internetconnection in ie?

since a few weeks (month?) i face the problem, that someone is changing the internetconnectionsettings in ie. That changed setting disturb webradiostreams to not be playable. every time i restart or sometimes afftr hibernate i have to go to internet settings and disable “use proxy”.

Someone here knows who is doing the settings? Here some screens:
OK when disabled:

https://i.imgur.com/khMfcFb.png

Not ok when enabled:

https://i.imgur.com/hmuEDgf.png

If you (or someone there) doesn’t change the settings it is likely malware that does it.
Follow these instructions > https://forum.avast.com/index.php?topic=194892.0