I have a HP desktop running running Windows 7 Premium Home Edition (64 bit). Two days ago I was on the IMDB and everything was loading incredibly slowly while all other sites I visited were fine. I decided to play it safe and run some scans. Superantispyware, Malwarebytes (both anti-malware and anti-rootkit), Avast, Adwcleaner, Housecall and ESET found nothing, but I got the following from Junkware Removal Tool:
Successfully deleted: [File] C:\Program Files (x86)\mozilla firefox\defaults\pref\channel-prefs.js
Investigating found other people who had issues with ads appearing when their preferences were compromised, which I did not experience. I checked Firefox's preferences and found my connection set to"use system proxy settings." I have since set it to "no proxy."
The next day, I ran JRT and it didn't detect anything. Thinking I was safe, I went online. When I was preparing to empty my cookies before signing out of Firefox, I found cookies from dotomi dot com and emjcd dot com despite having not visited those sites. I reran all my scans and did new scans with Windows Defender, Malicious Software Removal Tool, Rkill and Tdsskiller. Still nothing. I even uninstalled and reinstalled Firefox and ran Temporary File Cleaner to be safe. Now there are times when Firefox hangs when I try watching stuff on Youtube! What's going on and how do I fix it?