Threat description



The Sober.W worm was found on November 15th, 2005. This Sober variant is similar to Sober.T, that appeared yesterday:

Like the previous variants, this one sends itself inside a ZIP archive as an attachment in e-mail messages with English or German texts. We also received several different droppers for this worm variant. They were apparently created by the worm author manually. They are all detected as 'Sober.w' or 'Sober.W.dr'.


Automatic action

Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.

More scanning & removal options

More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.

You may also refer to the Knowledge Base on the F-Secure Community site for more information.

Contact Support

F-Secure customers can request support online via the Request support or the Chat forms on our Home - Global site.

Technical Details

This Sober variant sends a bit different e-mail messages:


Ihre eMail!


Guten Tag,
jemand schickte mir eine Mail mit einer Excel oder Access
Tabelle (kenne mich da nicht so aus!).
Jedenfalls ist diese Mail aber an ihre Mail Adresse adressiert,
aber zu meiner gekommen??? Ist wohl irgendein Fehler.
Ok, hier haben Sie sie wieder zurueck!

Attachment name starts with:


---- OR ----


Your email


Sorry, sorry sorry, because,, my English is not the best!
ok, I've got an email with an Excel-Table. But I am not the
recipient, the recipient are you!
I think, it's an mail error!
OK, here is your table back!


Sober.W worm is detected with the following F-Secure Anti-Virus updates:

Database: 2005-11-15_05

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