snxPlugins.dll

I was doing my daily computer check and found this under windows defender. I assume it is nothing to worry about but thought I would post to be sure. I have a Toshiba laptop Satellite L305-S5955, I use Avast Pro 5.0.418 and Windows Defender only thing running. Use Vista with all updates. Here is what defender found

Description:
This program has potentially unwanted behavior.

Advice:
Permit this detected item only if you trust the program or the software publisher.

Resources:
regkey:
HKLM\Software\Microsoft\Windows\CurrentVersion\RunOnce\aswsnxPlugins.dll

runonce:
HKLM\Software\Microsoft\Windows\CurrentVersion\RunOnce\aswsnxPlugins.dll

file:
C:\Program Files\Alwil Software\Avast5\snxPlugins.dll

Category:
Not Yet Classified

This is part of the avast sandbox.

So I guess you mean nothing to worry about and all is good.