The genuine WinRAR.exe file is a software component of WinRAR by Alexander Roshal.
WinRAR is a file archiver and compression tool used to create (pack) compressed files in the RAR and ZIP file formats. WinRAR.exe launches the WinRAR program. This is not an essential Windows process and can be disabled if known to create problems. WinRAR is features optional encryption for packed archives using the AES (Advanced Encryption Standard) with a 256-bit key, the ability to create split archives, self-extracting files, support for advanced NTFS file system options, file deduplication, and more. The program can also unpack ACE, ARJ, BZIP2, CAB, EXE, GZ, ISO, JAR, LHA, RAR, TAR, UUE, XZ, Z, ZIP, ZIPX, and 7z archives. The popular RAR format was developed by Eugene Roshal, a Russian software programmer. RAR stands for 'Roshal Archive'. His brother, Alexander Roshal, owns the copyright to the RAR format. WinRAR is currently offered as a trial version.
WinRAR stands for WinRAR Archiver Launcher
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 (9% of all occurrences), 916,992 bytes and 46 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
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 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic 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 6resmon 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 7DISM.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: ASecurity 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. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.