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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

MhtRedir.N

Threat LevelHigh threatDamageSevereDistributionNot widespread
Common name:MhtRedir.N
Technical name:Exploit/MhtRedir.N
Threat level:Medium
Alias:Exploit.HTML.Mht, Exploit-MhtRedir.gen
Type:Hacking Tool
Effects:  

It downloads and executes the Trojan Dropper.O, which at the same time installs an adware type program in the affected computer.

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Affected platforms:

Windows XP/2000/NT/ME/98

First detected on:July 26, 2004
Detection updated on:July 29, 2004
StatisticsNo

Brief Description 

    

MhtRedir.N is a Trojan that exploits a vulnerability in order to download, from an specific website, another Trojan detected by Panda Security as Trj/Dropper.O. In addition, this Trojan drops and executes the adware detected as Adware/Nsearch.

MhtRedir.N reaches the computer when the users visit specific websites. If the computer has the vulnerability described by Microsoft in the security bulletin MS04-013, then it will be automatically affected without user intervention.

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

Visible Symptoms 

    

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