I think my notebook may've gotten infected for quite some time now, at least october last year but I don't use internet banking, had no files deleted, had nothing bad happen to the pc and I wasn't sure wether I was really infected or not so I didn't bother. I'll detail here how I think I got infected and how this infection progressed through time. It may be a bit detailed so sorry anything. I usually refrain from putting emphasis on words but it looks like you all do it here and since my post is a bit long I'll do it too.
The notebook is a Lenovo G475. I have Windows 7 Professional SP1, 32 bits. Through this entire time my antivirus was McAfee Total Protection (supposedly the best they got).
Some months ago I had downloaded a file with some porn vids in it (heh) and they were all great but there was one among them that would show nothing at the screen, the bar showing time progress would run but there was simply no image (I was using Media Player Classic - Home Cinema to watch and in it you can see a clear difference from when the image is entirelly black and when there's no image at all, there was no image at all). Next day I turned up the pc and McAfee prompted a screen saying my pc was at risk because both its live scan and firewall were deactivated, I also couldn't start file scan since it would say it found an error. I clicked to activate those features and done my pc was "safe" again.
Fast forward some weeks, I had neither downloaded nor executed anything recently but I believe the virus may have gotten an update and whenever I turned up my pc there was a chance that McAfee would give these warnings. Windows Actions Center (that page where you can select your AV and Firewall, I don't know the English name for it) would prompt a message as well saying I had neither an active AV nor an active Firewall. These would appear pretty frequently but not always when turning the pc up. It would take some 2 minutes for the warning to appear but then all I needed to do was to click the activate button and everything would be back to normal.
Fast forward some more, the pc is now giving these warnings whenever I turn it up and to make things worse, clicking the activate button won't activte neither live scan nor firewall and I can't make file scans. I downloaded a new version of McAfee to install it again but before it starts installing it always make a quick scan to check for threats before installation.This time it wouldn't start this quick scan neither. I rebooted the pc and tried again, it started and installed normally but the warnings didn't go away. Even after an unninstall and clean install the problem persists.
So I came here and tried running the DDS version 20.01. That was my 1st attempt. After some 5 minutes running it froze my pc. ctrl+alt+del wouldn't work, right-click menu contexts would'n open, the CapsLock led wouldn't lit, the clock wouldn't change. I was watching a YouTube vid whilst running it so I wasn't sure if it froze because my equipment is a 3 years-old low-end machine or something foze it up. I rebooted.
2nd attempt at running DDS. I decided not to watch anything on youtube but still had BleepingComputer pages open. It froze again but this time Windows prompted a screen saying the aplication had stopped and if I wanted to kill it or wait. I selected wait but after 13 minutes nothing happened. This time CapsLock would lit but there was no other difference. I rebooted.
3rd attempt at running DDS. Deactivated wi-fi and closed Chrome. Kept at the PC clicking on things to see wheter it had froze or not. Froze after 6 minutes. Rebooted.
4th attempt at running DDS. Unninstalled McAfee, got Windows Firewall on (no warnings given for this one), deactivated wi-fi, waited till all programs were fully loaded, had no other application visibly running with a screen. Started DDS and went away. Exactly 20 minutes later I'm back, pc is frozen. Clock is frozen to 5 minutes after DDS began running. Only thing that works is mouse movement but mouse clicks won't work. After 5 clicks everything is frozen. I reboot.
Now, the only thing I've done is to get Windows Defender on, it gives no warning but I still think I'm infected. I'm specially concerned because DDS screen says it should take no more than 3 minutes. Any help will be greatly appreciated. If you feel like giving your thoughts at what might be happening and what might be the root of the problem I won't mind it.
Edited by Darapan, 19 January 2014 - 02:05 PM.