Threat description



We started to get reports about a new dropper for Sober.S worm at noon on October 6th, 2005. This dropper drops exactly the same Sober.S variant that started to spread early in the morning. When the dropper is run, it shows a messagebox as a decoy:

The description of Sober.S worm can be found here:


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.

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


The dropper for Sober.S worm is detected with the following F-Secure Anti-Virus updates:

Database: 2005-10-06_05

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