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 WinRAR.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.
Description: WinRAR.exe is not essential for the Windows OS and causes relatively few problems. WinRAR.exe is located in a subfolder of "C:\Program Files" (e.g. C:\Program Files\WinRAR\).
Known file sizes on Windows 10/8/7/XP are 936,960 bytes (10% of all occurrences), 916,992 bytes and 44 more variants.
The file is not a Windows system file. Therefore the technical security rating is 24% dangerous; however you should also read the user reviews.
Recommended: Identify WinRAR.exe related errors
If WinRAR.exe is located in the C:\Windows\System32 folder, the security rating is 98% dangerous. The file size is 62,770 bytes. There is no file information. The program has no visible window. The WinRAR.exe file is an unknown file in the Windows folder. The software starts when Windows starts (see Registry key: MACHINE\Run, MACHINE\RunServices, Run). The WinRAR.exe file is not a Windows system file. The process listens for or sends data on open ports to a LAN or the Internet. WinRAR.exe is able to hide itself and monitor applications.
If WinRAR.exe is located in the Windows folder for temporary files, the security rating is 74% dangerous. The file size is 116,224 bytes. The program has no file description. The program has no visible window. The process starts upon Windows startup (see Registry key: MACHINE\Run, MACHINE\RunServices, Run). The file is not a Windows system file. WinRAR.exe appears to be a compressed file.
If WinRAR.exe is located in a subfolder of the user's profile folder, the security rating is 64% dangerous. The file size is 1,541,632 bytes.
External information from Paul Collins:
There are different files with the same name:
Important: Some malware camouflages itself as WinRAR.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Generic.dx (detected by McAfee), and Backdoor.IRC.Bot or WS.Reputation.1 (detected by Symantec). Therefore, you should check the WinRAR.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 WinRAR. 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 WinRAR.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.