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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

Dropper.O

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:Dropper.O
Technical name:Trj/Dropper.O
Threat level:Medium
Type:Trojan
Effects:  

It downloads and executes an adware type program in the affected computer.

Affected platforms:

Windows XP/2000/NT/ME/98

First detected on:July 28, 2004
Detection updated on:Nov. 29, 2009
StatisticsNo

Brief Description 

    

Dropper.O is a Trojan that drops and executes the adware detected by Panda Software as Adware/Nsearch, in the affected computer.

Dropper.O is downloaded to the computer affected by MhtRedir.N from an specific website. MhtRedir.N exploits the vulnerability described by Microsoft in the security bulletin MS04-013, in order to download Dropper.O.

So it is highly recommendable to download the corresponding security patch available from Microsoft's website.

Visible Symptoms 

    

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