There's a large scale spam run underway, sending short e-mail messages. No text, just the subject field of "Happy New Year!" and a file named postcard.exe as an attachment.

The attachments are variable, but so far we detect them all as Trojan-Downloader.Win32.Tibs.jy. We have a description online too.

In general, kill all files named "postcard.exe". They always seem to be bad news.