Is this a Bot attack?

[Cybercraig]

All of a sudden my temps shot up. When I check I find my CPU usage is bouncing from 50-70% at idle. Considering normal is 5% what the heck could have happened? Spybot can't find anything and I've gone back 2 weeks on system restore to no avail. Any ideas?

 

[robisbell]

disbale your ethernet and/or wifi and see what happens. what firewall software are you using? what programs are autostarting and are in the taskbar?

 

[drebo]

Next time it happens, go into Task Manager and to the Processes tab. Sort by CPU Time descending and see which process is taking all of your cpu time.

 

[cubby1223]

Could be a wide range of issues. Sometimes Windows Update causes one of the svchost.exe processes to take up a lot of cpu time, I think there was an update recently out of the normal release schedule, make sure you've got all the updates from windowsupdate.com. Do you have an actual anti-virus program? Do not rely on just spybot. You can download install AVG from http://free.grisoft.com for free. Combofix is another great utility for scanning and removing files that commercial anti-virus and anti-spyware do not touch, it's downloaded from here:
http://download.bleepingcomputer.com/sUBs/ComboFix.exe

Otherwise, follow drebo's instructions and post which process is taking up the cpu time.

 

[Cybercraig]

Yea I have AVG Free. I did have a failed update to NET.Frame 2.0. Anyway, I restored two weeks back and it's back to normal. I get a 0x643 error on the failed update. Will investigate further.