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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

UsbStorm.A

Threat LevelLow threatDamageHighDistributionNot widespread
Common name:UsbStorm.A
Technical name:W32/UsbStorm.A.worm
Threat level:Medium
Alias:Downloader.Win32.VB,Bifrose.aav,
Type:Worm
Effects:  

Its main objective is to spread through USB storage devices. In order to do so, it makes copies of itself in the USB devices connected to a computer affected by this worm.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:April 10, 2007
Detection updated on:July 24, 2007
StatisticsNo
Proactive protection:
Yes, using TruPrevent Technologies

Brief Description 

    

UsbStorm.A is a worm whose main objective is to spread through USB devices.

Additionally, it attempts to connect to a certain website in order to download updates of itself.

UsbStorm.A spreads through USB devices by making copies of itself in them. When an infected USB device is connected to other computer, UsbStorm.A is activated, goes memory resident and remains waiting for a USB device to be connected.

Visible Symptoms 

    

UsbStorm.A is difficult to recognize, as it does not display any messages or warnings that indicate it has reached the computer.