What is ysdrv.sys?

ysdrv.sys is part of BigNox VM VirtualBox and developed by BigNox Corporation according to the ysdrv.sys version information.

ysdrv.sys's description is "VirtualBox Support Driver"

ysdrv.sys is digitally signed by Beijing Duodian Online Science and Technology Co.,Ltd.

ysdrv.sys is usually located in the 'c:\program files (x86)\bignox\bignoxvm\rt\' folder.

None of the anti-virus scanners at VirusTotal reports anything malicious about ysdrv.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 ysdrv.sys:

Product nameBigNox VM VirtualBox
Company nameBigNox Corporation
File descriptionVirtualBox Support Driver
Internal nameYSDrv.sys
Original filenameYSDrv.sys
Legal copyrightCopyright (C) 2009-2017 Oracle Corporation
Product version4.3.12.r2807
File version4.3.12.2807

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameBigNox VM VirtualBox
Company nameBigNox Corporation
File descriptionVirtualBox Support Driver
Internal nameYSDrv.sys
Original filenameYSDrv.sys
Legal copyrightCopyright (C) 2009-2017 Oracle Corpo..
Product version4.3.12.r2807
File version4.3.12.2807

Digital signatures [?]

ysdrv.sys has a valid digital signature.

Signer nameBeijing Duodian Online Science and Technology Co.,Ltd
Certificate issuer nameVeriSign Class 3 Code Signing 2010 CA
Certificate serial number49c2c379b09ef22d4301fffc5fc8354a

VirusTotal report

None of the 62 anti-virus programs at VirusTotal detected the ysdrv.sys file.

None of the 62 anti-virus programs detected the ysdrv.sys file.

Folder name variants

ysdrv.sys may also be located in other folders than c:\program files (x86)\bignox\bignoxvm\rt\. The most common variants are listed below:

Hashes [?]


What will you do with ysdrv.sys?

To help other users, please let us know what you will do with ysdrv.sys:

What did other users do?

The poll result listed below shows what users chose to do with ysdrv.sys. 95% have voted for removal. Based on votes from 594 users.

User vote results: There were 562 votes to remove and 32 votes to keep

NOTE: Please do not use this poll as the only source of input to determine what you will do with ysdrv.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.

Please select the option that best describe your thoughts on the information provided on this web page

Free online surveys

And now some shameless self promotion ;)

A screenshot of FreeFixer's scan result.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.


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.

unreal writes

5 thumbs

i want to delete ysdrv.sys but it can't beacuse its running in another program, can you help me?

# 23 Jan 2020, 14:51

Johnc writes

17 thumbs

to delete it you have to rename it to something else (i called mine "name.txt") then create a new, blank text document called "ysdrv.sys" in the same folder. restart your computer and it will be unable to initialize the program that uses it. then just select and hit the delete key :)

# 26 Apr 2020, 2:15

Roger Karlsson writes

0 thumbs

@unreal & @Johnc: Thank you for sharing! Are you using BigNox for gaming?

# 29 Apr 2020, 2:06

vivek writes

0 thumbs

thanks man i was so tensed out i checked everywhere tried everything i even messed up my file explorer a bit man thanku so much

# 29 Oct 2020, 5:06

Timmy writes

0 thumbs

Thx for the tips

# 25 Dec 2020, 8:40

Sadaf writes

0 thumbs

Thank you so much bro

# 10 Feb 2022, 13:33

Aaron writes

0 thumbs

Thanks for the info.
I was in trouble and now I have a solution.

# 3 Jun 2023, 19:55

Leave a reply