I got my hands on a copy of this malware, and in fact it is not detected by the 6/22/2005 virus definitions from Norton Anti-virus.

However, the free trial version of Kaspersky Anti-virus catches this worm.

Download.com has two versions:
http://www.download.com/3120-20_4-0.html?qt=kaspersky

I tested the less expensive of the two. (Well, they're both free for about a month, but you know what I mean.)

I downloaded both Norton AV and Kaspersky AV free trial versions from Download.com tonight, updated them both fully, and ran them against the malware sample I received.

If anyone knows of any other anti-virus programs that will catch this worm, let everyone know.