What is ksdef.sys?
ksdef.sys is part of Kingsoft Antivirus XEngine System and developed by Kingsoft Corporation according to the ksdef.sys version information.
ksdef.sys's description is "Kingsoft Defend Engine SYS"
ksdef.sys is digitally signed by Zhuhai Kingsoft Software Co.,Ltd.
ksdef.sys is usually located in the 'c:\windows\system32\drivers\' folder.
None of the anti-virus scanners at VirusTotal reports anything malicious about ksdef.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 ksdef.sys:
| Property | Value |
|---|---|
| Product name | Kingsoft Antivirus XEngine System |
| Company name | Kingsoft Corporation |
| File description | Kingsoft Defend Engine SYS |
| Internal name | kdekernel |
| Original filename | kdekernel.sys |
| Legal copyright | Copyright (C) 1998-2010 Kingsoft Corporation |
| Product version | 3,1,22968,48 |
| File version | 2010,08,21,48 |
Here's a screenshot of the file properties when displayed by Windows Explorer:
| Product name | Kingsoft Antivirus XEngine System |
| Company name | Kingsoft Corporation |
| File description | Kingsoft Defend Engine SYS |
| Internal name | kdekernel |
| Original filename | kdekernel.sys |
| Legal copyright | Copyright (C) 1998-2010 Kingsoft Cor.. |
| Product version | 3,1,22968,48 |
| File version | 2010,08,21,48 |
Digital signatures [?]
ksdef.sys has a valid digital signature.
| Property | Value |
|---|---|
| Signer name | Zhuhai Kingsoft Software Co.,Ltd |
| Certificate issuer name | VeriSign Class 3 Code Signing 2009-2 CA |
| Certificate serial number | 0ba4bc439930346b95694b4c7f2b981b |
VirusTotal report
None of the 45 anti-virus programs at VirusTotal detected the ksdef.sys file.
Hashes [?]
| Property | Value |
|---|---|
| MD5 | 69847e5b2c73215d8011991f32b5ca48 |
| SHA256 | 1789988f4cf374de2da622def99a914eea76908862470854db6ea10dc0f8d9cc |
What will you do with ksdef.sys?
To help other users, please let us know what you will do with ksdef.sys:
What did other users do?
The poll result listed below shows what users chose to do with ksdef.sys. 100% have voted for removal. Based on votes from 9 users.
| Votes | |||
|---|---|---|---|
| Keep | 0 % | 0 | |
| Remove | 100 % | 9 |
NOTE: Please do not use this poll as the only source of input to determine what you will do with ksdef.sys. Only 9 users has voted so far so it does not offer a high degree of confidence.
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 ;)
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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.
No comments posted yet.