I walked away from my PC for a bit and this window had popped up. I didn't get to see it happen so I don't have too many details except for what it looks like:
I still have it open if there is something else I can do to check its origins, all I know is that it's related to the explorer.exe process. The "Messenger" service is disabled so I am not sure where else this could have come from, I am not seeing any bizarre new processes started either. Any ideas what I should do now?
Derp derp derp, not everything like this is messenger related. Any program, any virus could throw a dialog box like this. I'm sure you know that, but I'm just reinforcing, this totally looks like someone sending a test message through a spyware/virus botnet. So run a virus/malware scan.
I'M A TWITTER SHITTER
I haven't found anything suspicious yet, but I did try closing the window, and it would keep popping up. So it definitely seems like malware. It's gone after I rebooted from a scan, but that doesn't really make me feel any better. Besides the programs I have mentioned, are there other things I should be scanning with? Or anywhere specific I should look?
There's also Process Monitor.
NintendoID: Nailbunny 3DS: 3909-8796-4685
I seriously can't find anything unusual scanning with the applications I mentioned in my post before this. Is there another good approach or piece of software that might help me out? I'm about to try a NOD32 trial and see if it finds anything.