Pondus
2
the name is avast … not avasti 
no security program have 100% detection
if you have the sample, upload it to avast lab from right click in virus chest, or you can do it here
http://www.avast.com/contact-form.php
if you need removal help, follow the guide, attach logs from the first 4 programs and help will arrive… free help 
http://forum.avast.com/index.php?topic=53253.0