Trojan Horses and Viruses

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Buggyman
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Trojan Horses and Viruses

Post by Buggyman »

After reading some post here latelyl I've notice something.
Are Trojan Horses considered a Virus?
I've alway thought that trojan horses were installed by cookies or some othe means.
The way I see it.. Trojan Horses are like ad cookies that are installed like "doubleClick" but yet my Virus scanner doesn't detect doubleclick when it's installed on my PC.
Can someone clear the picture up a little better here?

Thanks ! :D
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Juggernaut
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Post by Juggernaut »

A trojan is not a virus. Basically, a trojan is a program that opens up a "backdoor" on your computer that allows entrance into it. It's named after the Trojan Horse that was used way back in History.

Virus scanners will detect many trojan horses because they are closely related and usually malicious.

The Doubleclick cookies are more of a tracking and spyware/adware type thing (which is why Adaware picks it up)
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fredra
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Post by fredra »

Hey Buggyman
jug is correct..... but it is easy to stop things like "doubleclick" or "admonitor" or "flycast".
If you are using IE, go into Tools....Internet Options.....Security...click Restricted Sites...then click Sites....in the box that appears...type in "*.doubleclick.net" (do not include the "" quotes) and click ADD....then type in "*.doubleclick.com" and click ADD. Close the box and from then on doubleclick will not install on your PC.
That method includes any items which AD-AWARE finds on your PC, just go in and ADD (as a rule do it for both .net and .com).
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Buggyman
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Thanks Guys

Post by Buggyman »

As for the Ad cookies the only one I haven't got is the one that shows up with "F" in the Ad aware.
Anybody know the net and com for it? :D
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DiskDoc
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Post by DiskDoc »

Yea trojan hourses aka servers aka backdoors are porgrams that runs on a target machine to open up a backdoor for the hackers (more like lamers). A server can be attached to any .exe files and run invisibly. Servers have the ability to run on windows startup, send your IP address to the hacker everytime ur IP changes and so on. There are many ways to detect trojan horses and remove them from your computer. "The Cleaner" is a good server detector.
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greEd
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Post by greEd »

hmmm
I'm gonna have to disagree on this one and say that a trojan is a virus of sorts.

virus-A program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. Most viruses can also replicate themselves. All computer viruses are manmade. A simple virus that can make a copy of itself over and over again is relatively easy to produce. Even such a simple virus is dangerous because it will quickly use all available memory and bring the system to a halt. An even more dangerous type of virus is one capable of transmitting itself across networks and bypassing security systems.
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DiskDoc
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Post by DiskDoc »

gre, trojan is considered as a virus, we all know that but it's really NOT a virus. Virus is piece of program that runs automatically like trojan, yea, but virus does all the damage all by itself. A trojan horse does not cause any damages by itself. It can send out info about the target PC to the lamer who planted it. Info such as ur IP, POP3 and SMTP mail server address, computer name, user name and so on. A hacker/more like a lamer connects to the targeted PC through the backdoor and the damages are whatever the lamer decides. They can delete, edit files, modify the registry, download and upload stuff to the targeted comp and run them. So ya see the trojan hourse itself doesn't cause the damages, the lamer does. lol But you have a point there though. It is considered to be a virus. anyways..... :p
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Buggyman
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I guess the only way to find out is....

Post by Buggyman »

E-mail the people like norton and zonealarm.
That was the reason I asked was because someone mentioned that his virus scanner or firewall caught it. (I forgot which one)
I never thought about having something to scan for Trojan Horses.
I've had numerous test done and they all show my set up is in a stealth mode.
But you never no heh? :)
By the way... no one has the net and come for ad cookie called "F" ? :)
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greEd
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Post by greEd »

hello DiskDoc, :)
I agree with you, however confusing a trojan and saying it's not a virus could cause the computer illiterate community to become confused, many techs and professionals say virus for the sake of knowing that, that community will hear the words "computer virus" and know that it is a problem that needs to be addressed.
I agree that it is not a virus but there is still not a standard between backdoor and virus ....
"I'm doing a (free) operating system (just a hobby, won't be big and professional...) for AT clones... It's not portable and it probably [won't ever] support anything other than AT hard disks, as thats all I have :-(." --Posted on Usenet August 1991 by Linus Trovalds
http://www.computerglitch.net
curiosity builds security | dd if=/dev/zero of=/dev/hda bs=512 count=100
EOF
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DiskDoc
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Post by DiskDoc »

I totally agree with you. You have made it clear :D
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Buggyman
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Ok... Let's clear it up a little bit here...

Post by Buggyman »

The only real differant between a Trojan horse and a Virus so to speak is that a trojan Horse sneaks in and works in the background.
A virus on the other hand comes in and wacks hovac on the PC right away.
So the question is this....
Do Virus scanners recognize Trojan Horses like they do a regulare virus?
You would think that Virus scanner would look for the Trojan Horse file like it does a virus right?

Still don't have that dot net and dot com for the Ad cookie called "F" :( :rotfl:
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