The next steps I'd say you should take is run a full scan on your Avast security software (allow it to complete) then run a scan with Malwarebytes 2.0 (If you download malwarebytes from here on BC instead of the malwarebytes direct site it will be 2.0) when you run the scan on Malwarebytes use the "Threat Scan Option" in the scanning tab.
Feel free to post results of those scans (If its just a few results just copy paste the names and locations in a reply) if you're unsure what to remove. In most cases with Avast and Malwarebytes you can just clean anything it finds unless you notice a false positive in the detection list nearing the end of scans.
As for verification after scanning, you can use tools like Process Explorer and "netstat -a"
Process Explorer is like a more detailed and helpful advanced version of Task Manager you can really see what is going on in your system.
"netstat -a" is a command you would run in a command prompt window without the quote marks you can copy and past it in there, it will then generate a long list of connections made to your computer. If you're not familiar with how to review this list you can copy + Paste the results in a reply I believe the forum rules is to not attach files for safety reasons so with command prompt you can use: "CTRL + A" key (this will select all the text in the box) and then "CTRL + C" (This will copy the selected text) you may then simply paste it into the reply window.
As for Process Explorer, being unsure of whether not something is legit can be difficult so instead if you wish you can use DDS (download from BC here) run the tool and when it completes you'll have 2 txt files on your desktop: "DDS.TXT" and "ATTACH.TXT" feel free to add those to the reply I can take a peek at what's going on.
Please be sure when you're going to provide me with the DDS and Attach file information within that you DO NOT ATTACH THE FILES TO THE REPLY. I'm new to the forums here and apparently tools with reports like the DDS one I recommended can only be uploaded in a post on the Malware/Virus section as announced here so to stay compliant with the forum rules just copy and past the text of the files in 2 replies to keep it neat of each file in text format only.
We're currently only in the Windows Support section with this conversation so we would need to be careful when posting about Malware its also likely it could get moved by a Mod anyways to that section.