Help with Virus

This may not be a malware problem ( However you do have malware to fix ). Sounds to me like you may be using Windows Explorer to look at folders. The below folder is where you would see the Internet Explorer (No Add Ons) you commented on. ( replace USERACCOUNT with your user account name )

C:\Documents and Settings\USERACCOUNT\Start Menu\Programs\Accessories\System Tools

Whereas to see the rest of the System Tools, you would need to look in the All Users account

C:\Documents and Settings\All Users\Start Menu\Programs\Accessories\System Tools


What is list under All Programs -> Accessories -> System Tools is a combination of the above two mentioned folders.

 

After checking a little deeper into your logs, I see you have signifcant malware problem that I regret to have to inform you about. You have Virut infection. Below is one of our standard posts about Virut.

The most effective and reliable method to remove Virut is by a total clean reinstall.

 

Just a format and reinstall of Windows ( I assume you have your Windows XP cd to reinstall from ) and then reinstall your protection software from either new downloads or from an original CD. DO NOT use any executable files that you have saved anywhere since this infection. Virut can spread itself to all executable files ( every installer file you have downloaded and saved could be infected which is why you need new ones after the format ). If you reload even just one infected file, the whole problem will start again.

Note: Any removable drives you have plugged into this infected PC could be carrying the infection and if these removable drives were plugged into any other PCs, those PCs could be infected now.

 

You're welcome.

Run a FULL antivirus scan on all computers ( I assume they all have an antivirus program installed ). Also run at least one online scanner AFTER running the normal antivirus scan. You can use the below tool from ESET but we don't need the logs from all of the computers. You just need to scan to see if anything is found to be fixed.

Using ESET's Online Scanner

Computers on a network would only be susceptible if you have files/folders/drives being shared between computers on the network. If they are being shared, then were/are at risk. This does not mean for sure they are infected. It just means there is a chance that they are. The same applies to copy files to and from the thumb drive and inserting in other PCs. Depending on the contents of the thumb drive and whether you actually ran anything from it, it could increase the probability of it being infected.

 

We really don't like having logs from multiple computers posted in one thread as it tends to make the thread hard to follow and to separate one computer from another.

But the logs you posted are the least important. MGlogs.zip from MGtools would be the most useful to see if files have been getting changed by Virut. Also you need to run a full scan with your own antivirus program to see if it reports anything, but it appears you don't even have one installed which is extremely dangerous especially in light of having a Virut infection on another PC.