OneStepSearch is a potentially unwanted program that tries to promote a web site or product online. It may get inside the computer is a number of ways that is not expected by user. Most of the time, OneStepSearch enters the computer without user’s consent. It is packed to other threats, adware, or even legitimate programs that were repacked to carry OneStepSearch into one’s computer automatically.There are many types of unwanted program and OneStepSearch belongs to a group that makes changes on the computer in order to promote software. In short, this potentially unwanted program annoys user through pop-up alerts, messages, and other disturbance to catch user’s attention. It takes this opportunity to endorse a program, web site, or even popularize certain people and events.

If in case you are seeing a pop-up of OneStepSearch on the computer, it only denotes that a fix is necessary to stop these annoyances. There may be threats inside the system that can only be removed when you run a thorough scanning. Anti-virus and anti-malware programs are needed to find and delete malicious items that are hiding on the PC. To totally remove OneStepSearch, you must also get rid of all of its files and registry entries that could be hidden deep inside the system.

Once OneStepSearch was removed, it is best to install a security program that has real time protection to guard the computer from threats like viruses, Trojans, malware, and potentially unwanted program.

Signs and Symptoms of OneStepSearch Infection:

Browser is redirected to OneStepSearch web sites
Trojan usually infects a web browser in order to redirect it to another web page that contains additional malware. In some instances, redirects are used to promote a rogue program such as fake antivirus products.

Exhibits fake pop-ups and security alert
In order to deceive computer users, OneStepSearch will exhibit a bunch of fake security alerts and warning messages. It also intends to promote the malware as the sole remover for identified threats.

OneStepSearch will detect errors and threats that do not exists
If the redirect intends to promote a rogue program, user may see a bunch of fake detection after the browser is redirected to a malicious page. Keep in mind that that detection is fictitious and does not really exists in the computer at all. This trick is common to viruses and malware that uses redirect methods.

Other Functions of OneStepSearch:

  • OneStepSearch will arrive on computer via another virus infection
  • Internet browser can be redirected to unknown address that is usually the location of other malware
  • OneStepSearch may contact a remote computer and download more threats
  • OneStepSearch will display excessive advertisements on the computer
  • This threat also monitors Internet activity on the infected PC

How to Remove OneStepSearch

Remove the rootkit Trojan causing the redirect

Anti-rootkit utility called TDSSKiller is a free tool from Kasperksy that neutralizes complicated malware which effectively hides its process, folders, files and registry entries.

1. Download TDSSKiller from this link. Save the file to your desktop.
2. Extract the contents using archiver applications.
3. Reboot the computer in Safe Mode to avoid OneStepSearch from loading at start-up. You may want to print this procedure as we have to restart the computer to complete the removal process.
- Restart the computer.
- Before Windows begins to load, press F8 on your keyboard.
- It will display an Advanced Boot Options menu. Select Safe Mode with Networking.
- Windows will now start in Safe Mode.

4. Locate and run the TDSSKiller.exe file.

5. On Object to Scan, please mark Services and drivers as well as Boot Sectors.
6. Click on Start Scan to begin scanning your system. This may take a while.
7. After the scan is finished, it will reboot the computer. That should complete the disinfection process.

Download and scan with Malwarebytes Anti-Malware

1. Download Malwarebytes' Anti-Malware from this link and save it on your Desktop.
2. After downloading, double-click on mbam-setup.exe to install the application.
3. Follow the prompts and install as default only.

4. Before the installation completes, check on the following prompts:
- Update Malwarebytes' Anti-Malware
- Launch Malwarebytes' Anti-Malware

5. Click Finish. Program will run automatically and you will be prompt to update the program before doing a scan. Please update.
6. Scan your computer thoroughly.
7. When scanning is finished click on the Show Results button.
8. Make sure that all detected threats are marked, click on Remove Selected.
9. Restart your computer.

Note: Some malware may prevent mbam-setup.exe from downloading and running. You can download and rename this program from a different computer before running it on infected system.