Is this the same computer as this thread?
http://www.computerforum.com/203259-hijackthis-report-computer-running-slow.html
If so, I'm sorry it didn't get back to you. For some reason I miss a thread now and then. Just bump it from now on if I don't reply in a day or two.
Are you sure its virus free? Malwarebytes and antivirus software won't catch mbr rootkits/bootkits which will cause system slowness.
If its the same machine as the other thread then ignore running tdsskiller, but run combofix and answer questions 2, 3, and 4.
First of all, I need some info from you.
1. What operating system?
2. How much system memory?
3. What processor?
4. When was the last time the operating system was freshly installed?
There are also malware services that startup at system boot, we can run programs to check for rootkits/bootkits and such.
Have you ran the following?
1. TDSSkiller?
2. Combofix?
If not, then here are the procedures.
Please download and run
TDSSkiller
When the program opens, click on the start scan button.
TDSSKiller will now scan your computer for the TDSS infection. When the scan has finished it will display a result screen stating whether or not the infection was found on your computer. If it was found it will display a screen similar to the one below.
To remove the infection simply click on the Continue button and TDSSKiller will attempt to clean the infection.
When it has finished cleaning the infection you will see a report stating whether or not it was successful as shown below.
If the log says will be cured after reboot, please reboot the system by pressing the reboot now button.
After running there will be a log that will be located at the root of your c:\ drive labeled tdsskiller with a series of numbers after it. Please open the log and copy and paste it back here.
Download and Run ComboFix
If you already have Combofix, please delete this copy and download it again as it's being updated regularly.
- Download this file here :
Combofix
- When the page loads click on the blue combofix download link next to the BleepingComputer Mirror.
- Save the file to your windows desktop. The combofix icon will look like this when it has downloaded to your desktop.
- We are almost ready to start ComboFix, but before we do so, we need to take some preventative measures so that there are no conflicts with other programs when running ComboFix. At this point you should do the following:
- Close all open Windows including this one.
- Close or disable all running Antivirus, Antispyware, and Firewall programs as they may interfere with the proper running of ComboFix. Instructions on disabling these type of programs can be found here.
Once these two steps have been completed, double-click on the ComboFix icon found on your desktop. Please note, that once you start ComboFix you should not click anywhere on the ComboFix window as it can cause the program to stall. In fact, when ComboFix is running, do not touch your computer at all. The scan could take a while, so please be patient.
- Please click on I agree on the disclaimer window.
- ComboFix will now install itself on to your computer. When it is done, a blue screen will appear as shown below.
- ComboFix is now preparing to run. When it has finished ComboFix will automatically attempt to create a System Restore point so that if any problems occur while using the program you can restore back to your previous configuration. When ComboFix has finished creating the restore point, it will then backup your Windows Registry as shown in the image below.
- Once the Windows Registry has finished being backed up, ComboFix will attempt to detect if you have the Windows Recovery Console installed. If you already have it installed, you can skip to this section and continue reading. Otherwise you will see the following message as shown below:
- At the above message box, please click on the Yes button in order for ComboFix to continue. Please follow the steps and instructions given by ComboFix in order to finish the installation of the Recovery Console.
- Please click on yes in the next window to continue scanning for malware.
- ComboFix will now disconnect your computer from the Internet, so do not be surprised or concerned if you receive any warnings stating that you are no longer on the Internet. When ComboFix has finished it will automatically restore your Internet connection.
- ComboFix will now start scanning your computer for known infections. This procedure can take some time, so please be patient.
- While the program is scanning your computer, it will change your clock format, so do not be concerned when you see this happen. When ComboFix is finished it will restore your clock settings to their previous settings. You will also see the text in the ComboFix window being updated as it goes through the various stages of its scan. An example of this can be seen below.
- When ComboFix has finished running, you will see a screen stating that it is preparing the log report.
- This can take a while, so please be patient. If you see your Windows desktop disappear, do not worry. This is normal and ComboFix will restore your desktop before it is finished. Eventually you will see a new screen that states the program is almost finished and telling you the programs log file, or report, will be located at C:\ComboFix.txt.
- When ComboFix has finished, it will automatically close the program and change your clock back to its original format. It will then display the log file automatically for you.
- Now you just click on the edit menu and click on select all, then click on the edit menu again and click on copy. Then come to the forum in your reply and right click on your mouse and click on paste.
In your next reply please post:
- The ComboFix log
- A fresh HiJackThis log
- An update on how your computer is running
