Kaspersky Lab Internet Security 2009 Limited Edition Información técnica descargar pdf (Pagina 23)

Threats to computer security 23

TYPE

NAME

DESCRIPTION

Trojan-

Droppers

Trojan program-

droppers

These programs save programs

containing other Trojan programs on the

computer's disk and then install them.

Intruders can use Trojans-Droppers:

 install a malware programs without the

user's knowledge: trojans-droppers do

not display any messages or do display

false messages, for example, notifying

about an error in the archive or about

using the wrong version of the

operating system;

 protect another known malware

program from being detected: not any

anti-virus program can detect a

malware program located inside a

trojan-dropper.

Trojans-

Notifiers

Trojans-notifiers

They notify the intruder that the infected

computer is connected; and then - transfer

information about such computer to the

intruder, including: IP address, number of

an open port or the e-mail address. They

communicate to the intruder by e-mail, via

FTP, by accessing the intruder's web

page or using other methods.

Trojans-notifiers are often used in sets

comprised of various Trojan programs.

They notify the intruder that other Trojan

programs are successfully installed on the

user's computer.

Trojans-

Proxies

Trojans-Proxies

They allow the intruder to access web

pages anonymously using the user's

computer and are often used to send

spam.

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