Defrage spots files

[cwarn23]

In the past couple of months, I have been trying to find where all my drive C disk space went and I think I have found it. I originally took my computer to a computer store for my DVD rom drive to be replaced. Then it wouldn't boot up so I got that fixed. Then the store also said that the WiFi card was broken so I also got that replaced. Along the way the shop installed some software to check my system was ok. The below files I have descovered in defrage and there could be dozens more. I'm not sure if this is the remains of a virus, software or something the store might have done but would you know if it is safe to delete them. Because it is really taking up my 35GB harddrive. The main thing I need to know is are these files system files or are they program leftovers/files.

C:\FOUND.008\FILE0000.CHK
C:\FOUND.178\FILE0001.CHK
C:\FOUND.178\FILE0002.CHK
C:\FOUND.178\FILE0003.CHK
C:\FOUND.178\FILE0004.CHK
C:\FOUND.178\FILE0005.CHK

Also you can't just browse these files. You must type in the folders in the address bar. The way I found these files was by checking the defragment report since they couldn't be defraged.

[gerbil]

A good place to start would be:
Clean:
==Get CCleaner from http://www.ccleaner.com/ - and install it in a new folder. You should keep this one for general use. I set the installation checkboxes only to open from the recycle bin. It's neater that way.
Now run CCleaner from the recycle bin rclick menu using its default settings [if you set up CCleaner as i suggested, rclicking the bin icon should give you the Open CCleaner option...].
If you have FireFox open the Applications tab and ensure at least that Cookies and Cache are checked.
Select the Cleaner icon, press Run Cleaner.
==Download the file from this location, http://www.f-secure.com/tools/f-look2me.zip ; then as an administrator, unzip it and run the .exe. Reboot.
Scan for viruses..
==Please use IE to do an online scan at panda:- http://www.pandasoftware.com/products/activescan?
-select a link to the scan... free online virus scan...., enter a valid? email and follow through, choosing My Computer for a full system scan.
Post the log it produces here.
Scan for spyware:
==GET AVG antispyware 7.5 here.. http://free.grisoft.com/doc/5390/lng/us/tpl/v5
or here.. http://free.grisoft.com/freeweb.php/doc/5390/lng/us/tpl/v5#avg-anti-spyware-free
-Install it and UPDATE it.
Start AVG a-s 7.5;
-under Scanner/ Settings please change the default action from Recommended Actions to QUARANTINE, and run the complete system scan.
-press Apply all Actions and Save the log file. Post the log file.
If everything appears to be working you must now remove all old system restore points... do this by turning sys res off then on again for all drives. The path to this is via Start > all programs > accessories > system tools> system restore - use the link "system restore settings", and check turn off sys res for all drives, Apply... AND THEN UNCHECK THE BOX, AND APPLY. The reason for doing this is that some trojans write themselves into the System Restore files, and in there they are totally safe from anything.
==download hijackthis: http://www.majorgeeks.com/download5554.html
-copy it to a new FOLDER placed either alongside your program files or on your desktop and then... rename hijackthis .exe to imabunny.exe
-in that folder start HijackThis by dclicking the .exe; now close ALL other applications and any open windows including the explorer window containing HijackThis.
-click the Scan and Save a Logfile button. Post the log here.

[cwarn23]

The CCleaner looks like a good program but I have looked further into this case and it turned out the files where encrypted so you couldn't even see the random characters. I have checked the dates and what had happened on those dates and they turned out to be x-system files which some program had found and stored. I will install the ccleaner as I have over 140 programs which allways make tmp files and other unused files. But as for the online cleaner, I find most of them are traps made by hackers. And I allready have AVG. So this is solved and for those who are having the same problem, check the properties for the files to see what date it was created and see what happened on that date.

Just as a last comment there were 180 folders with 9GB of x-system files which I deleted (putting my system at risk) and now I have a faster computer.

[gerbil]

Whoa there, a moment. Not taking umbrage at all here, that is not the purpose of this reply at all.... but f-Secure and Panda are extremely reputable companies with excellent products. I and others would not recommend their tools if we had any doubts about them. Both companies do also market comprehensive packages for security purposes, for both private and corporate markets - they are respected. The free online tools provided by them and other like companies are both a service to computer users and also to themselves - they are not at all interested in seeing malware and viruses proliferate from computers whose owners cannot/will not afford to disinfect them - viruses and trojans spead from such computers and give them and their paying clients more headaches.
Anyway... I strongly recommend that you run the f-secure tool. Strongly. There was a reason that I indicated it was needed; out of the plethora of tools available most are specialised, this one is. And the Panda scan is thorough - we here rely on it for virus cleaning and spyware detections, so do yourself a favour and run it. Think of it as a second opinion.
Encryption. A lot of malware is delivered in encrypted packages. Why? So scanners cannot easily recognise code strings.
If you do run them please do inform of the results.