what do you mean you see data transmission ?
Maybe he means packets sent/received.
I don't have any viruses or malware files , be sure.
You never can be certain these days.
I agree with dexter, this may be malware. Try removing it with Malwarebytes and other said applications. If you can get internet access in Safe Mode with Networking, download and update the programs from there, and run the scan from there as well. Be sure to check your IPv4 settings as well.