General structure of an anti virus product

General structure of an anti virus product

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Subject Author Date
General structure of an anti virus product Vicks 01-18-2006
Posted by Vicks on January 18, 2006, 1:00 am
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Hi All,

This is my first question to this group. Can someone please help me to
understand how does antivirus product basically work in kernel mode.
I mean in kernel mode how and when does it scans the binary. Which User
and kernel mode APIs does it hook to implement its functionality.

When does the driver gets loaded during the booting up of system.

Any Info would be a great help.


Posted by Scherbina Vladimir on January 18, 2006, 4:29 am
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It usually hooks SDT. SDT is a service discriptor table - a table that
contains addresses of system calls.

This is not documented mechanism to implement hooking, so it's prone to
BSOD's. Google for details.

--
Vladimir

> Hi All,
>
> This is my first question to this group. Can someone please help me to
> understand how does antivirus product basically work in kernel mode.
> I mean in kernel mode how and when does it scans the binary. Which User
> and kernel mode APIs does it hook to implement its functionality.
>
> When does the driver gets loaded during the booting up of system.
>
> Any Info would be a great help.
>



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