I don't know where else to post this. I thought about installing Bitdefender Free, but I'm pretty sure I never installed it, and I don't see any trace of it on my system. But I was shutting down my Windows 8.1 system one day, and on the "Shutting Down" screen, all of a sudden an alert box appeared and said something like: "A problem has occurred in BitDefender Threat Scanner. A file containing error information has been created at C:\Windows\TEMP\BitDefender Threat Scanner.dmp. You are strongly encourage to send the file to the developers of the application for further investigation of the error."
I'm concerned about a random dump file getting generated for a program I don't have installed. It's a 2-week old system too. At first I was concerned it was a virus, but I haven't detected any on my system using multiple scanners, and I think it would be odd for a virus would be completely invisible except by alerting me to a dump file.
Any idea on how this could have happened?