Both of these two new family members are "oldies" when it comes to malware. In the past, Sober had perhaps the most prolific spam/mass email engine created to date. I've seen inboxes get inundated with copies. Thankfully, AV and email controls are much better than in the past. Still, any new variants from either of these two worms should be on our watchlist.
Sober.AA - Spammed in German and English versions
EMAIL to Avoid
These e-mail messages may appear to come from the following senders: Admin, Hostmaster, Postmaster, Webmaster
Body: Your eMail has occurred an unknown error on our Server.
Please read your mail and check the text. The full email is attached!
Bagle.HR - New downloader installs Rootkit
Email-Worm:W32/Bagle.HR is a trojan-downloader with rootkit technology