How to use Kaspersky TDSSKiller

By | mei 5, 2013
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A rootkit is a malicious program that hides the presence of malware in the system, for Windows systems it is a malicious program that penetrates into the system and intercepts the system functions (Windows API). It can effectively hide its presence by intercepting and modifying low-level API functions. Moreover it can hide the presence of particular processes, folders, files and registry keys. Some rootkits install its own drivers and services in the system (they also remain “invisible”). Kaspersky Lab has developed the TDSSKiller utility that allows you to easily removing rootkits from your system

TDSSKiller is a malware removal tool created by Kaspersky Labs that is developed especially to remove the TDSS rootkit. This rootkit is know under other names such as Rootkit.Win32.TDSS, Tidserv, TDSServ, and Alureon. TDSSKiller will also attempt to remove other rootkits such as the ZeroAccess rootkit and replace infected files like services.exe.

Kasperksy TDSSKiller can be downloaded as an stand-alone executable or a ZIP file that contains the executable. When using the program, it is easier to download the EXE directly and only download the ZIP file if your computer software or Internet connection does not allow the direct download of executables.

How to use Kaspersky TDSSKiller

Download the latest version of Kaspersky TDSSKiller from one of the links below

  1. 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.
  2. Kaspersky TDSSKiller will now start and display the welcome screen and we will need to click on Change Parameters option.
  3. Check the boxes beside Verify Driver Digital Signature and Detect TDLFS file system, then click OK.
  4. Next,we will need to start a scan with Kaspersky TDSSKiller
  5. Click the Start Scan button to begin the scan and wait for it to finish.
  6. Do not use the computer during the scan!
  7. When it finishes, you will either see a report that no threats were found like below:
  8. 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.
  9. If any infection or suspected items are found, you will see a window similar to below.
  10. 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.
  11. If ‘Suspicious objects’ are detected, the default action will be Skip. Leave the default set to Skip and click on Continue.
  12. If Malicious objects are detected, they will show in the Scan results. TDSSKiller automatically selects an action (Cure or Delete) for malicious objects.
  13. 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.
  14. 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.
  15. The default quarantine folder is in the system disk root folder, e.g.:
  16. C:\TDSSKiller_Quarantine\23.07.2010_15.31.43
  17. After clicking Next, TDSSKiller applies selected actions and outputs the result.
  18. A reboot might require after disinfection. A window like below will appear:
  19. Please reboot immediately if it states that one is needed.
  20. Whether an infection is found or not, a log file should already be created on your C: drive ( or whatever drive you boot from) in the root folder named something like TDSSKiller.2.1.1_27.12.2009_14.17.04_log.txt which is based on the program version # and date and time run.

TDSSKiller command-line usage instructions

  • -l – Save the TDSSKiller to log to the specified file name. If you do not specify a full pathname, TDSSKiller will save the log in the same folder that the executable resides in.
  • -qpath – Specify the path to a folder that TDSSKiller should use as the Quarantine folder. If this folder does not exist, TDSSKiller will create it.
  • -h – Display a list of the command line arguments.
  • -sigcheck – Detects all drivers that do not contain a digital signature as suspicious.
  • -tdlfs – Detect the presence of TDLFS file system which the TDL 3/4 rootkits create in the last sectors of hard disk drives for storing its files. All these files can be quarantined.

The following arguments make the actions apply without prompting the user:

  • -qall – Copy all objects to quarantine folder (Very Aggressive).
  • -qsus – Copy only the suspicious objects to the quarantine folder. (Safer)
  • -qboot – Quarantine all boot sectors.
  • -qmbr – Make a copy of all the Master Boot Records and store them in the quarantine folder.
  • -qcsvc – Copy the specified service to the quarantine folder.
  • -dcsvc – Delete the specified service. Only use if your sure the service should be removed.
  • -silent – Scan the computer in silent mode. This will not display any windows and allows the program to be used in a centralized way over the network.
  • -dcexact – Automatically detect and cure any known threats.

For example, you can use the following command to scan your PC and also generated a detailed log written to the file called report.txt. This report will be created in the same folder that TDSSKiller resides in.

  • TDSSKiller.exe -l report.txt


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