Malware infection – What can I do best?

By | mei 18, 2013

An malware infection is not the end of the world, and in the most cases there is always a way to recover a compromised computer. First of all do not panic and keep calm, getting rid of malware from a computer can be very frustrating and also a difficult job because many malware can be hard to detect and removing as well, but with some useful tips and the correct step-by-step instructions, almost everyone can eliminate them from a system and is able to succesfully clean an infected computer.

This self-help guide will help you to remove malware from your computer with step-by-step instructions, if you are having problems downloading files or no connection to the Internet, download the files mentioned in this guide on another computer, and then transfer them to the infected computer with a USB-stick.

Be aware that some malware have the capability of masking themselves and they take on the presence of native services of your system. Therefore, you should keep in mind that name of the process does not guarantee its legitimacy as well.
Also some malware can cause so much damage to your computer, that your system is unrecoverable. Some type’s of malware can’t be removed whitout leaving dangerous remnants, or compromised system files and executables like fileinfectors such as Virut, Sality and some backdoors. In this case, the only common solution is a clean installation of Windows, or a complete image of your systemdrive including the master boot record.

How to Fix a Malware Infected Computer

How to Fix a Malware Infected Computer

Malware infection – What can I do best?

All tools used in our malware removal guides are completely free to use and should be able to remove any trace of malware from your computer.

Please be aware that removing Malware is not so simple, and we strongly recommend to backup your personal files and folders before you start the malware removal process. In case of a system failure, you will be able to restore all your data.
Important! Do not back up any system files, programs and executables (.exe), or screensavers (.scr) because they can be infected with malware.

In this step-by-step self-help guide we recommend to use the tools one by one and if needed with a restart of the computer, don’t start any tools together at the same time because they can conflict and affect the detection.

Step 1 – Scan your computer for the presence of rootkits

A rootkit is able to hides itself from detection of anti-malware software. Most rootkits will also install other malware, redirect your Google search results, or prevent files from starting.

Please download the latest official version of Kaspersky TDSSKiller to your desktop from one of the links below.
http://support.kaspersky.com/downloads/utils/tdsskiller.exe
http://support.kaspersky.com/downloads/utils/tdsskiller.zip

  • If you can’t start Kaspersky TDSSKiller, you first need to rename it so that you can get it to run. Rename the executable from TDSSKiller.exe to iexplore.exe or svchost.exe, and then double-click on it to launch.
  • Kaspersky TDSSKiller will now start and display the welcome screen and we will need to click on Change Parameters option.
  • Check the boxes beside Verify Driver Digital Signature and Detect TDLFS file system, then click OK.

  • Next,we will need to start a scan with Kaspersky TDSSKiller
  • Click the Start Scan button to begin the scan and wait for it to finish.
  • Warning! Do not use the computer during the scan!
  • When it finishes, you will either see a report that no threats were found like below:
  • If no threats are found at this point, just click the Report selection on the top right of the form to generate a log. A log file report will pop which you can just close since the report file is already saved.
  • If any infection or suspected items are found, you will see a window similar to below.

  • If you have files that are shown to fail signature check do not take any action on these. Make sure you select Skip. We will tell you what to do with these later. These may not be issues at all.
  • If ‘Suspicious objects’ are detected, the default action will be Skip. Leave the default set to Skip and click on Continue.
  • If Malicious objects are detected, they will show in the Scan results. TDSSKiller automatically selects an action (Cure or Delete) for malicious objects.
  • Make sure that Cure is selected. Important! -> If Cure is not available, please choose Skip instead. Do not choose Delete unless instructed to do so.
  • Just for Reference purposes, if you were to quarantine any detected objects, Quarantined files will not be removed! They are moved to a quarantine folder.
  • The default quarantine folder is in the system disk root folder, e.g.:
  • C:\TDSSKiller_Quarantine\23.07.2010_15.31.43
  • After clicking Next, TDSSKiller applies selected actions and outputs the result.
  • A reboot might require after disinfection, please reboot immediately if it states that one is needed.

Step 2 – Scan for and Remove Malware with Malwarebytes Anti-Malware

Download Malwarebytes Anti-Malware to your desktop.

  • Double-click mbam-setup.exe and follow the prompts to install the program.
  • At the end, be sure a checkmark is placed next to Update Malwarebytes’ Anti-Malware and Launch Malwarebytes’ Anti-Malware
  • Then click Finish.
  • If an update is found, it will download and install the latest version.
  • Once the program has loaded, select Perform quick scan, then click Scan.
  • When the scan is complete, click OK, then Show Results to view the results.
  • Be sure that everything is Checked (ticked) except items in the C:\System Volume Information folder and click on Remove Selected.
  • If you accidently close it, the log file is saved here and will be named like this: C:\Documents and Settings\Username\Application Data\Malwarebytes\Malwarebytes’ Anti-Malware\Logs\mbam-log-date (time).txt
  • Note: If MBAM encounters a file that is difficult to remove, you will be presented with 1 of 2 prompts.
  • Click OK to either and let MBAM proceed with the disinfection process.
  • If asked to restart the computer, please do so immediately. Failure to reboot will prevent MBAM from removing all the malware.
  • After the restart in Normal mode, start Malwarebytes Anti-Malware again and perform a Full System scan to verify that there are no remaining threats.

Step 3 – Scan for and Remove Malware with HitmanPro

Please download HitmanPro to your desktop from one of the following links
HitmanPro (32bit) – Direct download link
HitmanPro (64bit) – Direct download link

  • Double click on HitmanPro to start the program, if you are experiencing problems while trying to start HitmanPro, you can use the Force Breach mode.
  • To start HitmanPro in Force Breach mode, hold down the left CTRL-key when you double click on HitmanPro and all non-essential processes will be terminated, including the malware processes.
  • HitmanPro will start and you’ll need to follow the prompts (by clicking on the Next button) to start a system scan with this program.
  • The program will start to scan the computer. The scan will typically take no more than 2-3 minutes.
  • Click on the next button and choose the option activate free license
  • Click on the next button and the infections where will be deleted.

  • Click now on the Save Log option and save this log to your desktop.
  • Click on the next button and restart the computer.

Step 4 – Scan for and Remove Adware with AdwCleaner

Download download AdwCleaner to your desktop.

  • Important! Before starting AdCleaner, close all open programs and internet browsers.
  • Double click on adwcleaner.exe to run the tool.
  • Click on Delete, then confirm each time with Ok.

  • Your desktop icons will be disappear, this is normal so don’t be worry about that.
  • Your computer will be rebooted automatically. A text file will open after the restart.
  • NEXT, double click on adwcleaner.exe to run the tool.
  • Click now on Uninstall, then confirm with yes to remove AdwCleaner from your computer.

Step 5 – Scan for and Remove malware with a deep scan of Emsisoft Anti-Malware

Download the Emsisoft Anti-Malware setup program to your desktop.

  • Once the installation package has been downloaded, double-click on the EmsisoftAntiMalwareSetup.exe icon to install Emsisoft Anti-Malware.
  • If the setup program displays an alert about safe mode if you try to install Emsisoft Anti-Malware in safe mode, please click on the Yes button to continue.
  • You should now see a dialog asking what language you would like to use. Please select the language you wish to use and press the OK button.
  • In the next screen accept the License Agreement by checking the option “I accept the agreement” and click on the install button.
  • After the necessary files are copied, you will get to a screen asking the mode that you wish to use Emsisoft Anti-Malware.
  • If you want to use the freeware mode whitout protection choose this option, we recommend to use the 30 days free trial (within this option you can get the full version of Emsisoft Anti-Malware for free, click here for more information about the Emsisoft Referral Rewards Program.

  • You will now be at a screen asking if you wish to join Emsisoft’s Anti-Malware network. Read the descriptions and uncheck the options that you wish to use. When you are ready click on the Next button.
  • Next Emsisoft Anti-Malware will begin to update it’s virus defenitions.
  • When the updates are completed, click on the Clean computer now button. Emsisoft Anti-Malware will start to load its scanning engine and then display a screen asking what type of scan you would like to perform.
  • Please select the Deep Scan option and then click on the Scan button. The Deep Scan option will take the longest time to scan your computer, but will also be the most thorough. As you are here to clean infections, it is worth the wait to make sure your computer is properly scanned.
  • Emsisoft Anti-Malware will now start to scan your computer for rootkits and malware.
  • Please be patient while Emsisoft Anti-Malware scans your computer.

  • When the scan has finished, the program will display the scan results that shows what infections where found.
  • Now click on the Quarantine Selected Objects button, which will remove the infections and place them in the program’s quarantine.
  • If you see a messag like “Not all Malware objects have been quarantined, Do you want to place them in quarantine now?” click on “Yes
  • You will now be at the last screen of the Emsisoft Anti-Malware setup program, click on the button Close setup wizzard.
  • If Emsisoft prompts you to reboot your computer to finish the clean up process, please allow it to do so.
  • Please reboot directly your computer when Emsisoft Ant-Malware is finished to complete the installation process.

Step 6. Information

Some of the programs that we used in our malware removal guides would be a good idea to keep and used often in helping to keep the computer clean. Malwarebytes Anti-Malware is one of the most powerful anti-malware tools. It is totally free but for real-time protection you will have to pay a small one-time fee. The license of Malwarebytes Anti-Malware is life-time so you have to buy it once, and because Malwarebytes Anti-Malware is a great addition to your regular virusscanner of security programs.

Change all your passwords because the most types of malware will steal your personal data such as passwords, emails, and banking information. Change all your passwords immediately, especially if you do any banking or other financial transactions on the computer.

Choose a good internet security suite, Bitdefender’s Internet security 2013 is an excellent, user-friendly security suite, and with the autopilot technology there are no popups, no alerts or other messages because in this mode it will resolve almost every security issue on its own without the intervention of the user.

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