I wouldn't recommend downloading any of the things in this thread.
Seems to me that it's just a trojan dropper and when executed, exploits a loophole in lsass.exe (Windows security process) and compromises your system.
When I downloaded and executed it, it removed registry entries for my avast and ****** around with my windows firewall, which is still disabled from an 'unidentified error'
It weird though, since sasser isn't known to have antivirus killer capabilites- maybe a new strain? Anyway, just in case, heres the Microsoft security patch for the lsass.exe vunerability