What is Npfmntor.exe

Norton AntiVirus Firewall Monitor Service - Norton AntiVirus - Symantec Corporation

File description

Npfmntor.exe with description Norton AntiVirus Firewall Monitor Service is a process file from company Symantec Corporation belonging to product Norton AntiVirus.
The file is digitally signed from Symantec Corporation - VeriSign Time Stamping Services Signer
We do not recommend removing digitally signed files from Symantec Corporation

What is NPFMntor.exe?
This is the Norton Personal Firewall Monitor. It is responsible for monitoring the activity of the Norton Personal Firewall. It is a component that is included with all Symantec Norton products with firewall functionality, including Norton Internet Security, Norton SystemWorks, and Norton 360.

This process is not essential to the proper operation of the system; however, it is essential to the proper operation of the firewall. If it causes problems for you and you wish to disable it, you should uninstall the Norton firewall properly. Killing the process or disabling the service may result in your computer being unable to access the Internet.

Dangers of NPFMntor
As this is a legitimate process that is installed on any system with a Norton firewall, it is common for virus writers and spyware vendors to disguise their malware as the genuine one.

Some malicious files may have the same name as this process but be stored somewhere other than in a Symantec- or Norton-related directory under %ProgramFiles%. Other malware may use a name that appears similar to that of the legitimate one but with slight differences in spelling or with appended digits. The following malware is known to disguise itself as NPFMntor.exe:
  • W32/Rbot-AGY (%SystemRoot%\System32)
    • This is a worm with backdoor Trojan functionality that allows a remote attacker to take control over an infected system via IRC.
There is typically only one instance of this process running at a given time on a system. The presence of multiple instances may be an indicator of a malware infection.

Common problems
  • This process starts using 100% CPU
    • This could be caused by a conflict between your Norton firewall and other security software on your system. Ensure that any other firewall software (including the Windows Firewall) is disabled.
    • If the problem persists, try reinstalling your Norton software.

Automatic startup locations

001 Running Processes
010 Installed services

Digital signatures found for this file

    Certificate 
13 Symantec Corporation - VeriSign Time Stamping Services Signer

MD5 security rating in our database

1 files (Not yet rated and digitally signed)
25 files (Safe and digitally signed)
Some versions of this filename have not yet been checked for safety.
Warning: Some malware might rename itself to npfmntor.exe. Always make sure that your file is from a verified publisher.

User ratings for this file

File rating: Average rating of npfmntor.exe: by 26 files and users.

Application errors

Fix npfmntor.exe application error:  Run a FREE registry scan

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