Dial/Switch-B

Category: Viruses and Spyware
Type: Trojan Dialer
Prevalence: Small Number of Reports

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Dial/Switch-B is a premium rate porn dialler. When the dialler is installed it
may attempt to dial premium rate services without the knowledge of the user.

Dial/Switch-B creates a copy of itself in the Windows system32 folder and the
following registry entry is created to run the dialler when Windows starts up:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run\Classes

It will also create a folder in <Program Files>/Plus18Point which might contain
various resources used by the dialler program.

Dial/Switch-B will attempt to reduce security levels and lock down control of
Internet Explorer or Netscape by setting the following registry entries:

HKCU\Software\Microsoft\Internet Explorer\Main\FeatureControl\
FEATURE_LOCALMACHINE_LOCKDOWN\iexplore.exe = 0

HKCU\Software\Microsoft\Internet Explorer\New Windows\Allow\
*.ffx23wl.nl

HKCU\Software\Netscape\Netscape Navigator\User Trusted External Applications
<Path to Dial/Switch-B> = "Yes"

HKCU\Software\Netscape\Netscape Navigator\Viewers\
TYPE47 = "application/x-callswitch"

HKCU\Software\Netscape\Netscape Navigator\Viewers\
application/x-callswitch = <Path to Dial/Switch-B>

It will also attempt to register a new MIME class of "application/x-callswitch"
with ".cxq" and ".mxq" extentsion by setting entries in:

HKCR\Classes\
HKCR\MIME\Database\Content Type\application/x-callswitch\

A number of registry entries are created that reference the following CLSID:

5CBF8C22-E9A6-11D7-90FE-000AE4012DB4

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