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 firefox.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 Tor Browser or Aurora or Waterfox or Nightly or Minefield or Internet Explorer
belongs to software Mozilla Firefox or Adobe SVG Viewer or Adobe Flash Player Plugin or FoxyTunes for Firefox or Adobe Flash Player (version 10 ActiveX, 10 Plugin) or Adobe Flash Player ActiveX or Tor Browser or Mozilla
by Mozilla (www.mozilla.org) or Microsoft (www.microsoft.com).
Description: Firefox.exe is not essential for the Windows OS and causes relatively few problems. The firefox.exe file is located in a subfolder of "C:\Program Files" or sometimes in a subfolder of the user's "Documents" folder (usually C:\Program Files\Mozilla Firefox\).
Known file sizes on Windows 10/8/7/XP are 307,704 bytes (5% of all occurrences), 7,633,008 bytes and 100 more variants.
The firefox.exe file is not a Windows core file. The application listens for or sends data on open ports to a LAN or the Internet. It is digitally signed. Firefox.exe is able to record keyboard and mouse inputs and monitor applications. Therefore the technical security rating is 21% dangerous, however you should also read the user reviews.
Recommended: Identify firefox.exe related errors
If firefox.exe is located in a subfolder of C:\, the security rating is 27% dangerous. The file size is 7,667,312 bytes (9% of all occurrences), 307,704 bytes and 19 more variants. The firefox.exe file is not a Windows system file. The process uses ports to connect to or from a LAN or the Internet. The file has a digital signature. Firefox.exe is able to record keyboard and mouse inputs and monitor applications.
If firefox.exe is located in a subfolder of the user's profile folder, the security rating is 32% dangerous. The file size is 338,432 bytes (12% of all occurrences), 303,616 bytes and 16 more variants. The file is not a Windows core file.
If firefox.exe is located in the C:\Windows\System32 folder, the security rating is 69% dangerous. The file size is 544,768 bytes (50% of all occurrences), 64,524 bytes, 1,263,695 bytes or 7,168 bytes.
If firefox.exe is located in a subfolder of "C:\Program Files\Common Files", the security rating is 40% dangerous. The file size is 307,712 bytes (66% of all occurrences) or 307,704 bytes.
If firefox.exe is located in the user's "Documents" folder, the security rating is 48% dangerous. The file size is 7,190,637 bytes (50% of all occurrences) or 912,344 bytes.
If firefox.exe is located in the "C:\Program Files" folder, the security rating is 8% dangerous. The file size is 275,568 bytes.
Important: Some malware camouflages itself as firefox.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder, for example Trojan.Generic.2500867 (detected by BitDefender), and Generic.dx!goq (detected by McAfee). Therefore, you should check the firefox.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 firefox. 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 firefox.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.