Threat Description

Sober.X

Details

Aliases: Sober.X, Email-Worm.Win32.Sober.x, W32/Sober.X@mm
Category: Malware
Type:
Platform: W32

Summary


The Sober.X 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.x'.



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:

Wichtig: Meine neue Mail Adresse!  

Body:

hi du,,, ike bin et  Musste mir leider ne neue Mail-Addy machen. Meine alte wird  nur noch zu gemuellt mit Spam.  Habe dir auch gleich die Datei mitgeliefert die du immer  haben wolltest. Ist aber ziemlich per....  Ok, man sieht sich  

Attachment name starts with:

Mail-Datei  

---- OR ----

Subject:

Your eMail Password  

Body:

Thanks for your registration! Your registration will not be  complete until you re-confirm it. Please read the following  agreement. If you accept it, click the Accept to complete  your registration!  

Attachment:

Accept_e-Text.zip  
Writeup:


Detection


Sober.X worm is detected with the following F-Secure Anti-Virus updates:
Database: 2005-11-15_04



Description Details: Alexey Podrezov; November 15th, 2005


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