Name :	Adware:W32/Superjuan
Category:	Spyware
Type:	Adware
Platform:	W32

This program delivers advertising content to the user. It is usually annoying but harmless, unless it is combined with spyware or trackware.

Superjuan is an adware that is installed as a Browser Helper Object (BHO).


Installation

The dll file is usually located in the windows system folder with a random file name and implements the following autorun entries:


Activity

While active, the adware can perform the  following actions:


The adware also lowers the Security level settings on Microsoft Internet Explorer's Security Zones.


Activity

The adware tracks search queries made on a defined list of strings, then either displays adware or redirects the query. The adware tracks queries made on these websites:


When the user searches on a defined website, the adware may contact a server to obtain an address or data containing an advertisement. The adware then launches a new web browser instance, which is in this format:


Where [Address] is an IP address or domain returned by a contacted server, giving the location of advertisement data.

The searches made by the user may also be redirected to the following address:


Where [Address] in this case is dependent on a hard coded variant. Some possible addresses are:


The adware is known to be associated with several rogue applications. The adware may redirect the user to an online scanning website, which may trick the user into installing a rogue application. Some representative screenshots of rogue applications can be seen below:





Several variants of these rogue applications may also contact a website containing a script that downloads and execute a rogue installer program.


Registry

During installation, several registry entries may be temporarily created, in order to facilitate the adware's tracking functionality.


It adds the DLL file name ton the Appinit startup:


And keys to register the adware as a Browser Helper Object (BHO):


These are the CLSID that the adware may use: