The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the runner.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.
The process known as MasterAgent or WebStroller runner module
belongs to software Idle Crawler or OverLook or Web Stroller or MasterAgent or The Kinemorphic (version 3D Screen Saver)
by EUROHAUTE LTD or KORSTON UNITED LP or GREYSTONE VENTURES LP or OVERTON GLOBAL LLP or WebStroller inc or MILE 27 LTD.
Description: Runner.exe is not essential for the Windows OS and causes relatively few problems. Runner.exe is located in a subfolder of the user's profile folder.
Known file sizes on Windows 10/8/7/XP are 392,768 bytes (25% of all occurrences), 39,512 bytes and 11 more variants.
The file is not a Windows system file. The program has no file description. The program has no visible window. The runner.exe file is digitally signed. Runner.exe is able to monitor applications. Therefore the technical security rating is 57% dangerous, however you should also read the user reviews.
Recommended: Identify runner.exe related errors
If runner.exe is located in a subfolder of "C:\Program Files", the security rating is 46% dangerous. The file size is 93,696 bytes (20% of all occurrences), 394,840 bytes, 45,056 bytes, 392,768 bytes or 2,702,336 bytes. The software has no file description. The runner.exe file is not a Windows system file. The program has no visible window. Runner.exe is able to monitor applications.
If runner.exe is located in a subfolder of Windows folder for temporary files, the security rating is 80% dangerous. The file size is 42,496 bytes (50% of all occurrences) or 45,568 bytes. The application has no file description. The program has no visible window. Runner.exe is not a Windows core file.
If runner.exe is located in a subfolder of C:\Windows\System32, the security rating is 72% dangerous. The file size is 165,376 bytes (50% of all occurrences) or 217,138 bytes.
Important: Some malware camouflages itself as runner.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Adware.IdleCrawler.E (detected by F-Secure), and Win32:Malware-gen (detected by Avast). Therefore, you should check the runner.exe process on your PC to see if it is a threat. If MasterAgent has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
A clean and tidy computer is the key requirement for avoiding problems with runner. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.
Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.
To help you analyze the runner.exe process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.