We understood that the problem was not with the mssql.domain_name link but the virus alert only happened after click on ASP .NET Enterprise Manager, Recomended this site. And the link was:

www.referralplanet.com/referral/windows/referralWindow.asp?id=17

Since the site was not hosted with us we had a sigh of relief that the problem is not with the server however we thought we still have a security problem if the link has been injected into ASP .NET Manager site in IIS, may be due to a security issue with Plesk control panel. And after checking several servers we came to know that the problem has happened to the site that is recommended on MSSQL Webadmin site and not the server.

If you want to remove this link from your server as well as from the MSSQL WebAdmin site then follow the steps below:

1. Login into the server through RDP with Administrator user.
2. Go to D:\inetpub\vhosts\sqladmin\mssql\app
3. Open the navbar.aspx page in notepad
4. Go to line number 119 and remove the code below:

<!-- Begin ReferralPlanet.com Referral Script -->
<a onclick="refWindow=window.open('http:// www.referralplanet.com/referral/windows/referralwindow.asp?id=18','referralWindow' ,'width=350,height=520,scrollbars=yes,menubar=no,resizable=yes'); refWindow.focus(); return false;" target=_blank href="http:// www.referralplanet.com/referral/windows/referralWindow.asp?id=17">
<IMG alt="Click Here To Tell A Friend" src="images/tellafriend.gif" border=0></A>
<!-- Begin ReferralPlanet.com Referral Script -->

5. Save the file and exit.

This problem must have infected millions of computer in the world. Let see when chinese hacker stop putting their shit on other’s website and get mature.