Yesterday I was looking over my Windows Explorer and figured that my "c:\inetpub" had some contents, which includes "history" and "temp". On history there is a folder named "CFGHISTORY_000000001", which contais "schema", "administration.config" and "applicarionHost.config".
As far I know(I don't know much thing about IIS), this folders means that my IIS service is (or was someday) enabled.
So, the other side of the my doubt is that some months ago I got my computer hacked(from some way that I still don't know) and got some passwords stolen. At this time my antivirus wasn't up-to-date and I had no firewalls(I already fixed it). I never enabled IIS mannually or something else. So, my doubt is.... Could someone hacked my system and used IIS as a backdoor? Should I worry about my system today?
PS: Im using Windows 7 Ultimate 32 bits.