Most antivirus programs identify Scanner.exe as malware—such as TrendMicro identifies it as TROJ_MALDOC.SM or TROJ_SPNR.04CG11, and Kaspersky identifies it as Trojan-Downloader.Win32.Small.blnn.
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Description: Scanner.exe is not essential for Windows and will often cause problems. The Scanner.exe file is located in a subfolder of "C:\Program Files".
The file size on Windows 8/7/XP is 137,728 bytes.
The Scanner.exe file is not a Windows system file. Some people think it is not dangerous. The program is not visible. The software starts upon Windows startup (see Registry key: Run). Scanner.exe is able to monitor applications. Therefore the technical security rating is 0% dangerous, however you should also read the user reviews.
Recommended: Identify Scanner.exe related errors
If Scanner.exe is located in a subfolder of the user's profile folder, the security rating is 56% dangerous. The file size is 342,016 bytes. There is no description of the program. The program is not visible. The file is not a Windows core file.
External information from Paul Collins:
Important: You should check the Scanner.exe process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.
A clean and tidy computer is the key requirement for avoiding problems with Scanner. 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 doing a repair of your installation, or in the case of Windows 8, 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 Scanner.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.