What is netfilter.sys?
netfilter.sys is part of NetFilter SDK and developed by NetFilterSDK.com according to the netfilter.sys version information.
netfilter.sys's description is "NetFilter SDK TDI Hook Driver (WPP)"
netfilter.sys is usually located in the 'C:\Windows\system32\drivers\' folder.
Some of the anti-virus scanners at VirusTotal detected netfilter.sys.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
Vendor and version information [?]
The following is the available information on netfilter.sys:
| Property | Value |
|---|---|
| Product name | NetFilter SDK |
| Company name | NetFilterSDK.com |
| File description | NetFilter SDK TDI Hook Driver (WPP) |
| Internal name | netfilter2.sys |
| Original filename | netfilter2.sys |
| Legal copyright | Copyright © 2013 NetFilterSDK.com |
| Product version | 1.4.3.1 |
| File version | 1.4.3.1 built by: WinDDK |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | NetFilter SDK |
| Company name | NetFilterSDK.com |
| File description | NetFilter SDK TDI Hook Driver (WPP) |
| Internal name | netfilter2.sys |
| Original filename | netfilter2.sys |
| Legal copyright | Copyright © 2013 NetFilterSDK.com |
| Product version | 1.4.3.1 |
| File version | 1.4.3.1 built by: WinDDK |
Digital signatures [?]
netfilter.sys is not signed.
VirusTotal report
1 of the 50 anti-virus programs at VirusTotal detected the netfilter.sys file. That's a 2% detection rate.
| Scanner | Detection Name |
|---|---|
| TrendMicro-HouseCall | TROJ_GEN.F47V0131 |
Hashes [?]
| Property | Value |
|---|---|
| MD5 | a4abb21d13528d1ba3abf484b2df24fe |
| SHA256 | 2dc5cfb023d990fd5680859660108ea80fb320a882c5b4bbaa3a061d7c870f46 |
What will you do with netfilter.sys?
To help other users, please let us know what you will do with netfilter.sys:
What did other users do?
The poll result listed below shows what users chose to do with netfilter.sys. 93% have voted for removal. Based on votes from 109 users.
NOTE: Please do not use this poll as the only source of input to determine what you will do with netfilter.sys.
Malware or legitimate?
If you feel that you need more information to determine if your should keep this file or remove it, please read this guide.
And now some shameless self promotion ;)
Hi, my name is Roger Karlsson. I've been running this website since 2006. I want to let you know about the FreeFixer program. FreeFixer is a freeware tool that analyzes your system and let you manually identify unwanted programs. Once you've identified some malware files, FreeFixer is pretty good at removing them. You can download FreeFixer here. It runs on Windows 2000/XP/2003/2008/2016/2019/Vista/7/8/8.1/10. Supports both 32- and 64-bit Windows.
If you have questions, feedback on FreeFixer or the freefixer.com website, need help analyzing FreeFixer's scan result or just want to say hello, please contact me. You can find my email address at the contact page.
Comments
Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.
I have four xp computers. I found this file on one of my computers in a scan. I use "Search Everything" to see if it is a legimate file. If not, I go to one or both of my other computers and check them to see if it is there or not. On this file, it was definitly a bad one so off it goes if a search on google shows it is bad also.
# 7 Apr 2014, 10:52
Cliff writes
Adwcleaner flagged this file as suspicious, but after deleting it I can no longer connect to wifi. removing it damaged the internet device/wifi device drivers.
I am going to have to get help fixing/reinstalling this file.
my best guess is it's one of those files that can get infected (it seems to have been infected by tracking software) and needs to be repaired rather than removed. I have not tested ethernet cables to see if I can connect at all, but wifi is definitely dead here. Many users who removed this file may not function off wifi for internet so they did not yet encounter any adverse effects of deleting it. that or they use wifi and could not get back on here to comment of the effects of removing it.
It is a windows OS file supplied with windows 7 ONLY, if encountered elsewhere, then it's a virus, I justhappen to have windows 7 so this was a problem for me and I'll have to get a fresh copy from microsoft.
# 21 Mar 2016, 6:54
Donald Ballard writes