Author Topic: .wmv file scan  (Read 2635 times)

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.wmv file scan
« on: June 25, 2011, 05:38:28 PM »
Hello All,

I just scanned a downloaded 2.00 GB .wmv file with avast which it completed in less than a second and found no threat. Normally a file scan this size would take several minutes to complete.

I scanned it with Malwarebytes and it did the same thing. super fast and no threats.

I don't have anything in my exclusions settings.

The file plays normally with my media player.

Any ideas what's causing the scanners to behave this way?

Thanks for any assistance.


  • Guest
Re: .wmv file scan
« Reply #1 on: June 25, 2011, 06:31:15 PM »
Malwarebytes doesn't even read in non-PE files, as for avast, probably only certain parts need to be scanned

Offline NON

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Re: .wmv file scan
« Reply #2 on: June 25, 2011, 06:39:57 PM »
Hello and welcome to the forums mike54g,

There is scanning engine update and some behavior are changed.
See my post and igor's answer:

Is there some changes to scanning engine?
Just noticed scanning speed increases dramatically in movie file scanning (finished less than 1 sec with "Test whole files" enabled).
As far as I remember it takes seconds to scan this kind of big files...
Yes, though it has nothing to do with the new program build (it's inside of the virus definitions).
« Last Edit: June 25, 2011, 06:43:40 PM by NON »
Desktop: Win10 Pro 22H2 64bit / Core i5-7400 3.0GHz / 32GB RAM / Avast Premium Beta(Icarus) / Comodo Firewall
Notebook: Win10 Pro 22H2 64bit / Core i5-3340M 2.7GHz / 12GB RAM / Avast Free / Windows Firewall Control
Server: Win11 Pro 23H2 64bit / Core i3-4010U 1.7GHz / 12GB RAM / Avast One Essential

Avast の設定について解説しています。よろしければご覧ください。


  • Guest
Re: .wmv file scan
« Reply #3 on: June 26, 2011, 05:02:11 PM »
OK. That's great to know.

I will take some time to further read those posts and links.

Thanks for your assistance.