Threat Description

Sober.W

Details

Aliases: Sober.W, Email-Worm.Win32.Sober.w, W32/Sober.W@mm, W32/Sober.W.dr
Category: Malware
Type:
Platform: W32

Summary


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

https://www.f-secure.com/v-descs/sober_t.shtml

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'.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

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



Technical Details


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

Subject:

Ihre eMail!  

Body:

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:

Tabelle  

---- OR ----

Subject:

Your email  

Body:

Hello,  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!  cya....  

Attachment:

excel_table.zip  


Detection


Sober.W worm is detected with the following F-Secure Anti-Virus updates:
Database: 2005-11-15_05



Description Details: Alexey Podrezov; November 15th, 2005


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