RewriteEngine on
 RewriteCond %{HTTP_REFERER} !^$
 RewriteCond %{HTTP_REFERER} !^http://(www.)?rush.lv/.*$ [NC,OR]
 RewriteCond %{HTTP_REFERER} !^http://(www.)?cs.wire.lv/.*$
 RewriteRule .*.(zip|rar|exe)$ http://rush.lv/files/redir.php [R,NC,L]