An e-mail that identifies itself as Microsoft Security Bulletin MS05-039 offers a link to what it claims is a patch against the Sober Zafi and Mytob worms. TechWorld reports that the bulletin doesnt exist, the patch is fake and the Trojan is not currently detected by anti-virus software products. However, the risk is considered low as the server hosting the Trojan seems to have shut down and the server has exceeded its bandwidth and seems to be running out of power.”]
Source: https://www.csoonline.com/article/2118284/fake-microsoft-alert-comes-with-free-trojan.html