What is btfilter.sys?
btfilter.sys is part of Windows (R) Win 7 DDK driver and developed by Qualcomm Atheros according to the btfilter.sys version information.
btfilter.sys's description is "Qualcomm Atheros BtFilter Driver"
btfilter.sys is digitally signed by Qualcomm Atheros.
btfilter.sys is usually located in the 'c:\Windows\System32\drivers\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about btfilter.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 btfilter.sys:
| Property | Value |
|---|---|
| Product name | Windows (R) Win 7 DDK driver |
| Company name | Qualcomm Atheros |
| File description | Qualcomm Atheros BtFilter Driver |
| Internal name | btfilter.sys |
| Original filename | btfilter.sys |
| Legal copyright | © Microsoft Corporation. All rights reserved. |
| Product version | 10.0.1.1 |
| File version | 10.0.1.1 built by: WinDDK |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Windows (R) Win 7 DDK driver |
| Company name | Qualcomm Atheros |
| File description | Qualcomm Atheros BtFilter Driver |
| Internal name | btfilter.sys |
| Original filename | btfilter.sys |
| Legal copyright | © Microsoft Corporation. All rights.. |
| Product version | 10.0.1.1 |
| File version | 10.0.1.1 built by: WinDDK |
Digital signatures [?]
btfilter.sys has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Qualcomm Atheros |
| Certificate issuer name | VeriSign Class 3 Code Signing 2010 CA |
| Certificate serial number | 6938b223fb5a2c2f44951c9e423a12e9 |
VirusTotal report
None of the 57 anti-virus programs at VirusTotal detected the btfilter.sys file.
Folder name variants
btfilter.sys may also be located in other folders than c:\Windows\System32\drivers\. The most common variants are listed below:
- c:\Windows\System32\DriverStore\FileRepository\qca_btusb.inf_amd64_beb0f2cd57f155f1\
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 06e525d9dfeea87bb69fcaadf21013e1 |
| SHA256 | 72511d4a837f55976ef6d4094d6547cff38b9662937eaf996f67426ec6ebd77f |
What will you do with btfilter.sys?
To help other users, please let us know what you will do with btfilter.sys:
What did other users do?
The poll result listed below shows what users chose to do with btfilter.sys. 17% have voted for removal. Based on votes from 12 users.
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.
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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.
The problem with btfilter.sys is not whether it it is malware or not, but that you usually get an old version of the file with your hardware, nad there is simply no way to update it. Qualcomm shuns all responsibility and the OEM providers always have outdated drivers.
# 14 Aug 2017, 3:51
Jayson writes