firefox.exe is a program 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 system is clean, we still advise you to use a well-known antivirus with a good track record, in order to defend yourself against viruses and malware.
Usually, the default filename and directory where this application is stored is
C:\Program Files (x86)\Mozilla Firefox\firefox.exe.
The MD5 checksum for this file is 2ef2b10e5f65fb054d2d54bda54d230b.
This application is NOT a Windows service. This is good.
This executable runs as a 32-bit program. It can not exploit the entire set of features of nowadays' PC chips. This is quite normal because the publishers did not bother to upgrade it to 64-bit code.
The description written in the file is Firefox.
File version 51.0.1.
Company 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 means it doesn't work in some kind of invisible mode. Its activity is clearly displayed to the user.
Some dangerous functions of Windows appear to be used, such as functions for intercepting the keyboard. We recommend you to perform more in-depth research about this program.
firefox.exe has a digital signature. Today most serious programs are digitally signed.
The digital signature found in firefox.exe checks out perfectly. This is excellent.
Digitally signed by: Mozilla Corporation
Certificate's issuer name: DigiCert SHA2 Assured ID Code Signing CA
It has an uninstall string in registry, which is a good sign. si are uninstall.