Why aren't viruses developed as "locked" files?

Or is this possible? We've all seen the locked/quarantined files that Nod32 (and all of the other scanners as well) can't get to when running scans, wouldn't it make sense if they were developed with this in the first place to make removal even more difficult?

It's obviously possible since quarantined files present this issue, not sure how system files are locked though.

Probably sounds very vague, let me know if it doesn't make sense

 

These type of worms already exists - Sober worms with exclusive Filelocks for example. So nothing new.

 

Here: http://www.eset.com/msgs/sobery.htm

 

So, unless there's a specific fix for them, there's not much one can do?

 

What specific fix? You just detect these worms running in the memory, terminate them and delete the files - what is so difficult here?

 

Simply detects the file before it runs

EDIT : or use the above method said by Happy Bytes

 

Didn't mean to upset you there, just assumed the file would lock itself in the Windows environment as well, but that's not too hard to get around anyways.

Asking questions before my mind thinks is getting me.

Thanks all.

 

You're propably not long enough here, but hey if i would be upset this sounds completely different

 

Yea, I just joined the other day, but have been a long time Nod32 user, I'm the guy trying to get my Boss to start selling Nod32

https://www.wilderssecurity.com/showthread.php?t=118628

 

HB happy mode:
Now you know hehe