5/24: XML_Badbun.A Malicious Script Arrives as Attachment
XML_Badbun.A is malicious script that arrives as attachment to email messages spammed by another malware or a malicious user.
It accesses Web sites to download files. It also executes its downloaded files. As a result, routines of the downloaded files may also be exhibited on the affected system.
Technical details can be found at this Trend Micro page.