Hello,
This system has been running fine (Although not sure if got infected before this) But earlier today something weird happened.
I had the headphones on and this like video advertisement was playing in the background (Just the sound, american voice) advertising something. I thought it was just firefox or something else left open, so I closed everything possible but it was still playing, looked in task manager but nothing there. In the sound device you could see the channel for it with the sound volume coming up and down but the device said “Unknown device” It went away but it come back about 3 to 5 times during the day just randomly, I thought I was going crazy.
The final time I realized it might of been malware, however I was thinking maybe it was some process just stuck in windows so I did a reboot just to see what would happen. Upon on reboot, I logged in with my password but windows got stuck on the windows loading screen after that for over 15 minutes. I tried again to boot up once more but to no avail. So I started up in safe mode and run a system restore. Not sure if this process was the wise thing to do but I just needed to get into windows to run the scans.
Anyway after the system restore, it was still a little slow at starting up but started up, so I run the scans. In general even after the scans the system seems a bit slow and there is HDD activity when doing nothing. Please advise me the next course of action and how bad the infections are. (The unidentifiedadvertisement has gone after the combofix scan/system restore)
Also I’ve noticed random files being placed in the partions, such as MBR.dat and these:
7556_134520052_MVM_3.tmp
7556_134520052_MVM_3.tmp
After cleaning they reappear randomly. Malwarebytes does not find anything but the others seem to have found some things?
Thanks in advance for taking a look.