Two days ago Avast found three viruses, they were all Win32:Cycbot-KI and the file names ended in [Emul]. I deleted the files and after I rebooted my computer I couldn’t open up most files. I decided to format my hard drive and start over again. After I reinstalled the operating system I only downloaded and installed Firefox and Avast and I only visited two sites which I’ve been visiting for years and have never given me a problem. Later that night I ran a full system scan and found the same exact three files/trojans.
I read around on this forum that many people were experiencing this same problem and how if you run a memory scan you’ll encounter weird problems and it was suggested to not run a memory scan and just run a default normal/quick scan. However the default Full system scan says it scans “All harddisks, Rootkits (quick scan), Auto-start programs and modules loaded in memory” and there is no way to change any of this. So I created a custom scan and had it set to scan just All harddisks and it still found the same three trojans.
I didn’t do anything and went to bed and now when I do a scan, any scan, no viruses are found. Was this a false positive all along and an update was released sometime last night that fixed everything?