Hello; I have had more or less the exact same problem, a constant barrage of URL: Mal warnings from Explorer.exe; typically one from onlinesecuritymeter.in, then usually five in rapid succession from it's IP address, all thankfully blocked. This only started happening today.
I'm going on the assumption that I will need my own unique solution, but as the problem is entirely identical to this, I also assumed it would be easier to post here.
I have used Avast, MalwareBytes, SUPERAntiSpyware, both in and out of safe mode, tried to find anything with HijackThis, and even tried a system restore to a previous date, none of which worked.
The needed logs are attached.
I'll note in advance I'm going to be going out of town for the weekend, so I unfortunately won't be able to respond until Monday.