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Trojan cause system slow down?

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#1 colum


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  • Local time:05:04 AM

Posted 06 July 2009 - 12:53 PM

It starting with google search result always get redirect to some shopping site,
I immediately disconnect from internet, scan with Malwarebyte, detect out all kinds of Trojan, click fix it. Reboot the computer, Trojan.agent reappear again, go update the Malwarebyte and scan again, same thing happen.
Then I went to download Spybot & Spyware Doctor (all updated), install and scan through, seem like fix the problem, Trojan.agent is gone.
Here is my problem, after all these, computer is slow down a lot, even a small excel file need more than 20 seconds to open, my TaskManager show I got 10 svchost running under Network service, Local service and system.., each of them have at least 4k memory usage, one of them even had 36k usage, my CPU always on 100% as long as I stay connected to internet.
I update all Malwarebyte, Spybot & Spyware and scan full system, nothing been found, and I search this forum, nobody had same problem, what should I do Now?
(I am working right now, not able to post scan log.)
Please Help! :thumbsup:

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#2 Computer Pro

Computer Pro

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  • Local time:04:04 AM

Posted 12 July 2009 - 06:10 PM

Hello and Welcome to Bleeping Computer.

Next run ATF and SAS:

Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

From your regular user account..
Download Attribune's ATF Cleaner http://www.atribune.org/ccount/click.php?id=1 and then SUPERAntiSpyware , Free Home Version. http://www.superantispyware.com

Save both to desktop ..
DO NOT run yet.
Open SUPER from icon and install and Update it
Under Scanner Options make sure the following are checked (leave all others unchecked):
Close browsers before scanning.
Scan for tracking cookies.
Terminate memory threats before quarantining.
Click the "Close" button to leave the control center screen and exit the program. DO NOT run yet.

Now reboot into Safe Mode: How to enter safe mode(XP)
Using the F8 Method
Restart your computer.
When the machine first starts again it will generally list some equipment that is installed in your machine, amount of memory, hard drives installed etc. At this point you should gently tap the F8 key repeatedly until you are presented with a Windows XP Advanced Options menu.
Select the option for Safe Mode using the arrow keys.
Then press enter on your keyboard to boot into Safe Mode.

Double-click ATF-Cleaner.exe to run the program.
Under Main "Select Files to Delete" choose: Select All.
Click the Empty Selected button.

If you use Firefox or Opera browser click that browser at the top and choose: Select All
Click the Empty Selected button.
If you would like to keep your saved passwords, please click No at the prompt.
Click Exit on the Main menu to close the program.

NOW Scan with SUPER
Open from the desktop icon or the program Files list
On the left, make sure you check C:\Fixed Drive.
Perform a Complete scan. After scan,Verify they are all checked.
Click OK on the summary screen to quarantine all found items.
If asked if you want to reboot, click "Yes" and reboot normally.

To retrieve the removal information after reboot, launch SUPERAntispyware again.
Click Preferences, then click the Statistics/Logs tab.
Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
If there are several logs, click the current dated log and press View log.
A text file will open in your default text editor.
Please copy and paste the Scan Log results in your next reply.
Click Close to exit the program.
Computer Pro

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