Hi,
I tried tracing this IP's as follows, but nothing new.
188.111.53.33 is from Germany(DE) in region Western Europe
188.111.53.48 is from Germany(DE) in region Western Europe
192.221.103.254 is from United States(US) in region North America
195.50.164.138 is from Germany(DE) in region Western Europe
8.12.211.254 is from United States(US) in region North America
In my point, there is some application present in your machine which is trying to connect to this IP's.
And that application activity is monitored by Rtvscan.
Check with your IE settings if any internet traffic is trying to get through your proxies to these IP's.
B'coz i have seen one case, where the issue was simillar & when we tried clearing the proxy settings under IE, then issue seems to be resolved.
Hope this helps you!!