firefox.exe is a application which is most likely legit. So, if firefox.exe is on your PC, it is most likely ok, and will NOT be a cause for concern. Even if your PC is clean, it is still recommended to purchase a well-known antivirus with a good track record, in order to defend your PC against threats.
The default filename and folder where the program is stored is
C:\Program Files\Mozilla Firefox\firefox.exe.
The MD5 fingerprint for this file is eeab6d5cf73c032acc2c6a2eb1abdecb.
This program is NOT a Windows service. This is good.
This executable uses the Internet to communicate. In this day and age this is expected from a program. For example, most of the apps on your PC check for updates. In order to do this, Internet communications are necessary.
This exe runs as a 32-bit program. It does not benefit of the full set of features of current computer CPUs. This ordinarily happens because the authors did not bother to upgrade it to use the x64 instruction set.
The description extracted from the program is Firefox.
File version stored as a property 55.0.2.
Author Mozilla Corporation.
Legal copyright notice ©Firefox and Mozilla Developers; available under the MPL 2 license..
firefox.exe appears to have a visible user interface. This is good because it doesn't run in a kind of invisible mode. Its operation is clearly displayed to you.
Some insecure functions of Windows appear to be used, such as functions for tapping the keyboard. We recommend you to read more about this program.
firefox.exe is digitally signed. Today most clean programs are digitally signed.
The digital signature extracted from firefox.exe verifies as ok. This is most likely a clean, ok program.
Digitally signed by: Mozilla Corporation
Certificate's issuer name: DigiCert SHA2 Assured ID Code Signing CA
It has an uninstall routine, which is a good sign. si are uninstall.