Need help removing URL:Mal

Hello, everyone.
I recently started to receive avast warnings regarding URL:Mal infection at the bottom right corner which references rundll32.exe process and some links I’ve never been too. I tried scanning, but it seems this doesn’t help to remove this problem. Please, tell me what I can to do to get rid of it or what information I need to provide.
Thank you!

Attach your basic diagnostic logs. (MBAM, FRST and aswMBR)
Instructions: https://forum.avast.com/index.php?topic=53253.0

Monitoring for the logs …