Trojans all explained here
Trojan ( bad ) Beware !!

Trojan horse well this term has many meanings .
In the context of computer software, a Trojan horse is a malicious program that is disguised as or embedded within legitimate software. The term is derived from the classical myth of the Trojan Horse. They may look useful or interesting (or at the very least harmless) to an unsuspecting user, but are actually harmful when executed.

Often the term is shortened to simply Trojan, even though this turns the adjective into a noun, reversing the myth (Greeks were gaining malicious access, not Trojans).
There are two common types of Trojan horses.

One, is otherwise useful software that has been corrupted by a cracker inserting malicious code that executes while the program is used. Examples include various implementations of weather alerting programs, computer clock setting software, and peer to peer file sharing utilities.

The other type is a standalone program that masquerades as something else, like a game or image file, in order to trick the user into some misdirected complicity that is needed to carry out the program's objectives.

Trojan horse programs cannot operate autonomously, in contrast to some other types of malware, like viruses or worms. Just as the Greeks needed the Trojans to bring the horse inside for their plan to work, Trojan horse programs depend on actions by the intended victims. As such, if trojans replicate and even distribute themselves, each new victim must run the program/trojan. Therefore their virulence is of a different nature, depending on successful implementation of social engineering concepts rather than flaws in a computer system's security design or configuration. Definition

A Trojan horse program has a useful and desired function, or at least it has the appearance of having such. Trojans use false and fake names to trick users into dismissing the processes. These strategies are often collectively termed social engineering. In most cases the program performs other, undesired functions, but not always. The useful, or seemingly useful, functions serve as camouflage for these undesired functions. A trojan is designed to operate with functions unknown to the victim. The kind of undesired functions are not part of the definition of a Trojan Horse; they can be of any kind, but typically they have malicious intent.

In practice, Trojan Horses in the wild often contain spying functions (such as a packet sniffer) or backdoor functions that allow a computer, unknown to the owner, to be remotely controlled from the network, creating a "zombie computer". The Sony/BMG rootkit Trojan, distributed on millions of music CDs through 2005, did both of these things. Because Trojan horses often have these harmful behaviors, there often arises the misunderstanding that such functions define a Trojan Horse.

In the context of Computer Security, the term 'Trojan horse' was first used in a seminal report edited/written by JP Anderson (aka 'The Anderson Report' (Computer Security Technology Planning, Technical Report ESD-TR-73-51, USAF Electronic Sysstem Division, Hanscom AFB, Oct, 1972), which credits Daniel J Edwards then of NSA for both the coinage and the concept. One of the earliest known Trojans was a binary Trojan distributed in the binary Multics distribution; it was described by PA Karger and RR Schell in 1974 (Multics Security Evaluation, Technical Report ESD-TR-74-193 vol II, HQ Electronic Systems Division, Hanscom AFB, June 1974).

The basic difference from computer viruses is that a Trojan horse is technically a normal computer program and does not possess the means to spread itself. The earliest known Trojan horses were not designed to spread themselves. They relied on fooling people to allow the program to perform actions that they would otherwise not have voluntarily performed.

Trojans implementing backdoors typically setup a hidden server, from which a hacker with a client can then log on to. They have become polymorphic, process injecting, prevention disabling, easy to use without authorization, and therefore are abusive.

Trojans of recent times also come as computer worm payloads. It is important to note that the defining characteristics of Trojans are that they require some user interaction, and cannot function entirely on their own nor do they self-propagate/replicate.


Example of a simple Trojan horse

A simple example of a trojan horse would be a program named "waterfalls.scr.exe" claiming to be a free waterfall screensaver which, when run, instead begins erasing all the files on the computer.

Example of a somewhat advanced Trojan horse

On the Microsoft Windows platform, an attacker might attach a Trojan horse with an innocent-looking filename to an email message which entices the recipient into opening the file. The Trojan horse itself would typically be a Windows executable program file, and thus must have an executable filename extension such as .exe, .com, .scr, .bat, or .pif. Since Windows is sometimes configured by default to hide filename extensions from a user, the Trojan horse is an extension that might be "masked" by giving it a name such as 'Readme.txt.exe'. With file extensions hidden, the user would only see 'Readme.txt' and could mistake it for a harmless text file. Icons can also be chosen to imitate the icon associated with a different and benign program, or file type.

When the recipient double-clicks on the attachment, the Trojan horse might superficially do what the user expects it to do (open a text file, for example), so as to keep the victim unaware of its real, concealed, objectives. Meanwhile, it might discreetly modify or delete files, change the configuration of the computer, or even use the computer as a base from which to attack local or other networks - possibly joining many other similarly infected computers as part of a distributed denial-of-service attack. The Sony/BMG rootkit mentioned above both installed a vulnerability on victim computers, but also acted as spyware, reporting back to a central server from time to time, when any of the music CDs carrying it were played on a Windows computer system.

Types of Trojan horses

Trojan horses are almost always designed to do various harmful things, but could be harmless. Examples are
erasing or overwriting data on a computer.
encrypting files in a cryptoviral extortion attack.
corrupting files in a subtle way.
upload and download files.
allowing remote access to the victim's computer. This is called a RAT. (remote administration tool)
spreading other malware, such as viruses. In this case the Trojan horse is called a 'dropper' or 'vector'.
setting up networks of zombie computers in order to launch DDoS attacks or send spam.
spying on the user of a computer and covertly reporting data like browsing habits to other people (see the article on spyware).
make screenshots.
logging keystrokes to steal information such as passwords and credit card numbers (also known as a keylogger).
phish for bank or other account details, which can be used for criminal activities.
installing a backdoor on a computer system.
opening and closing CD-ROM tray

Time bombs and logic bombs

"Time bombs" and "logic bombs" are types of trojan horses.

"Time bombs" activate on particular dates and/or times. "Logic bombs" activate on certain conditions met by the computer.

Precautions against Trojan horses
Trojan horses can be protected against through end user awareness. Trojan Horse viruses can cause a great deal of damage to a personal computer but even more damaging is what they can do to a business, particularly a small business that usually does not have the same virus protection capabilities as a large business. Since a Trojan Horse virus is hidden it is harder to protect yourself or your company from them but there are things that you can do.

Trojan Horses are most commonly spread through an e-mail, much like other types of common viruses. The only difference being of course is that a Trojan Horse is hidden. The best ways to protect yourself and your company from Trojan Horses are as follows:
1. If you receive e-mail from someone that you do not know or you receive an unknown attachment never open it right away. As an e-mail use you should confirm the source. Some hackers have the ability to steal an address books so if you see e-mail from someone you know that does not necessarily make it safe.
2. When setting up your e-mail client make sure that you have the settings so that attachments do not open automatically. Some e-mail clients come ready with an anti-virus program that scans any attachments before they are opened. If your client does not come with this it would be best to purchase on or download one for free.
3. Make sure your computer has an anti-virus program on it and make sure you update it regularly. If you have an auto-update option included in your anti-virus program you should turn it on, that way if you forget to update your software you can still be protected from threats
4. Operating systems offer patches to protect their users from certain threats and viruses, including Trojan Horses. Software developers like Microsoft offer patches that in a sense “close the hole” that the Trojan horse or other virus would use to get through to your system. If you keep your system updated with these patches your computer is kept much safer.
5. Avoid using peer-2-peer or P2P sharing networks like Kazaa , Limewire, Ares, or Gnutella because those programs are generally unprotected from viruses and Trojan Horse viruses are especially easy to spread through these programs. Some of these programs do offer some virus protection but often they are not strong enough.
Besides these sensible precautions, one can also install anti-trojan software, some of which are offered free.

Methods of Infection

The majority of trojan horse infections occur because the user was tricked into running an infected program. This is why you're not supposed to open unexpected attachments on emails -- the program is often a cute animation or a sexy picture, but behind the scenes it infects the computer with a trojan or worm. The infected program doesn't have to arrive via email, though; it can be sent to you in an Instant Message, downloaded from a Web site or by FTP, or even delivered on a CD or floppy disk. (Physical delivery is uncommon, but if you were the specific target of an attack, it would be a fairly reliable way to infect your computer.) Furthermore, an infected program could come from someone who sits down at your computer and loads it manually.

Websites: You can be infected by visiting a rogue website. Internet Explorer is most often targeted by makers of trojans and other pests, because it contains numerous bugs, some of which improperly handle data (such as HTML or images) by executing it as a legitimate program. (Attackers who find such vulnerabilities can then specially craft a bit of malformed data so that it contains a valid program to do their bidding.) The more "features" a web browser has (for example ActiveX objects, and some older versions of Flash or Java), the higher your risk of having security holes that can be exploited by a trojan horse.

Email: If you use Microsoft Outlook, you're vulnerable to many of the same problems that Internet Explorer has, even if you don't use IE directly. The same vulnerabilities exist since Outlook allows email to contain HTML and images (and actually uses much of the same code to process these as Internet Explorer). Furthermore, an infected file can be included as an attachment. In some cases, an infected email will infect your system the moment it is opened in Outlook -- you don't even have to run the infected attachment.

For this reason, using Outlook lowers your security substantially.

Open ports: Computers running their own servers (HTTP, FTP, or SMTP, for example), allowing Windows file sharing, or running programs that provide filesharing capabilities such as Instant Messengers (AOL's AIM, MSN Messenger, etc.) may have vulnerabilities similar to those described above. These programs and services may open a network port giving attackers a means for interacting with these programs from anywhere on the Internet. Vulnerabilities allowing unauthorized remote entry are regularly found in such programs, so they should be avoided or properly secured.

A firewall may be used to limit access to open ports. Firewalls are widely used in practice, and they help to mitigate the problem of remote trojan insertion via open ports, but they are not a totally impenetrable solution, either.
More on trojans
Trojan Part 1
1.What is this text about?
In this text I'm going to explain you interesting things about
the trojans and about their future.I hope you'll realize that
trojans are dangerous and they're still big security problem although
many people say don't download files from the net and you won't get
infected which is not right.The main thing I want to explain here is
do the trojans have future and other interesting things about them.
This text is only for Windows based trojans not Unix one.
2.What Is A Trojan Horse?

A trojan horse is
-An unauthorized program contained within a legitimate program. This unauthorized
program performs functions unknown (and probably unwanted) by the user.

-A legitimate program that has been altered by the placement of
unauthorized code within it; this code performs functions unknown
(and probably unwanted) by the user.

-Any program that appears to perform a desirable and necessary
function but that (because of unauthorized code
within it that is unknown to the user) performs functions unknown
(and probably unwanted) by the user.

Trojans can also be called RAT's, or Remote Administration Tools.
The trojan got it's name from the old mythical story about how the greeks during
the war, gave their enemy a huge wooden horse as a gift.
They accepted this gift and they brought into their kingdom,
and during the night, greek soldiers crept out of the horse and attacked the city,
completely overcoming it.

3.Trojans Today
Trojans has always been big security problem even today.Most of the people
don't know what a trojan is and they keep downloading files from untrusted
sources or from suspicious people.Today there are more than 600 trojans on
the net that I know but I think there are many many more.Because every hacker or
programer today have it's own trojan made for his/her special needs and not
published anywhere.Every hacking group has also it's own trojans and programs.
When someone start learning winsock the first creating is chat client or trojan
horse.Even the anti-virus scanners I'll talk below people still get infected
by themselves,by some hacker or by some of your friends.

4.The Future Of Trojans
I think there're a lot of people out there that think the
trojans are outdated and they don't have future.Well I don't
think so.Trojans will always have future and new things added in
them.There are so many things that can be improved by skilled programers
in the trojans.

Trojans that COMPLETELY hide in the system and of course restart every time Windows is loaded
trojans that will lie every trojan and anti-virus program this is the future I think.
People that program trojans has a lot of ideas that makes their trojans unique.
These people start placing backdoors in ActiveX and who knows maybe in future they'll
find other sources they can place the trojans in.Programmers will always think of
new and unique trojans with functions never seen before.
Trojans are made every day by the programers with new options and with better encryption so
the Anti-Trojan software can't detect them.So noone knows how many are the trojans on the net.
But the programmers are still programming trojans and they will continue in the future.
Technically, a trojan could appear almost anywhere, on any operating system or platform.
However, with the exception of the inside job mentioned previously, the spread of trojans works
very much like the spread of viruses. Software downloaded from the Internet, especially shareware or freeware,
is always suspect. Similarly, materials downloaded from underground servers
or Usenet newsgroups are also candidates.There are thousand of programs with not checked source and new programs are appearing every day especially the freeware one so they can all be trojans.So be careful what you're downloading and from where you're downloading it. Always download software from the official page.

5.Anti-Virus Scanners
People think that when they have a virus scanner with the latest virus definitions
they're secure on the net and they can't get infected with a trojan or noone can
have access to their computer.This is NOT right.The purpose of the anti-virus
scanners is to detect not trojans but viruses.But when trojans became popular
the scanners started adding also trojan definitions.These scanners just can't
find the trojans and analyze them that's why they're just detecting the common
and the well know from everyone trojans like Back Orifice and NetBus and also
several other.As I told they're around 600 trojans I know out there and the
anti-virus scanners are detecting just a LITTLE part of them.
These scanners are not firewalls that will stop someone that want to connect
to your computer or try to attack you as people think they are.So I hope that
you understand that the main purpose of these scanners is not to detect
trojans and protect you while you're online.
Most of the internet users know only Back Orifice and NetBus as trojans.
There are some specific tools out there that clean ONLY from these trojans.
Again people think that they're secure and protected from every trojan.

6.How Can I get Infected?
Everyone ask this question and often people ask themselves how they got
infected.Also when someone ask them did they run some file send to them
by someone or downloaded from somewhere people always say they didn't
run anything or download some file but they did it.People just don't
pay attention to things they do online and that's why they forget
about the moment of the infection with the trojan.
You can get infected from many places and I'll try to explain
you these things here.

6.1 From ICQ
6.2 From IRC
6.3 From Attachment
6.4 Physical Access
6.5 Tricks-diskette

6.1 From ICQ
People think that they can't infect while they're talking via ICQ
but they just forget the moment when someone sends them a file.
Everyone knows how insecure ICQ is and that's why some people
are afraid of using it.

As you maybe know there's a bug in ICQ allowing you to send a .exe
file to someone but it will look as .bmp or .jpg or whatever you want
it to look like.This is very dangerous as you see and can get you in
trouble.The attacker will just change the icon of the file like
a BMP image,tell you it's a pic of him,rename it to photo.bmp
then you'll get it and of course before getting it you'll see that
it's .bmp and you're secure because the file is not executable.
Then you run it see the picture and you think there's nothing to
worry about but there is.

That's why most of the people say that they didn't run any files
because they know that they've run an image not executable.
A way to prevent this bug in ICQ is always to check the type of
the file before running it.It may has an BMP icon but if at the type
of the file is written executable I thin you know that it will be
mistake if you run that file.

6.2 From IRC

You can also get infected from IRC by receiving files from
untrusted sources.But I advice you always to be paranoid
and do not receive files from ANYONE even from your best
friend because someone may stolen his/her password
and infect you.Some people think that they can be 100% sure
that the other person is their friend when they ask him/her
something like a secret or something else that only he/she know
but as I told you be paranoid because someone may infect your friend
and just check his/her IRC logs and see what is this secret about or
learn other things.Be paranoid it's more secure as I say and do not
receive files from anyone on IRC or from somewhere else like
e-mail,ICQ or even your online friends.

6.3 From Attachment

The same thing goes about the e-mail attachments.NEVER run anything
even if it says you'll see hot porno or some passwords for server or
anything else.The best way to infect someone with a trojan is mass
e-mailing the server because there're new people on the net and
they'll of course get infected.This is the best way of infecting
as I said that's why it's preferred by the people that want to infect
the masses.

6.4 Physical Access

You can of course get infected by some of your "friends" when they
have physical access to your computer.Let's suppose you leave
someone on your computer just for 5 minutes,then of course you can
get infected by one of your "friends".There are some very smart people
out there that keep thinking of new ways of getting physical access
to someone's computer.Here are some tricks that are interesting:

1.You "friend" may ask you "Hey bro can you give me some water"
or something that will leave him alone.You'll go to take some
water and then........You know

2.The attacker may have a plan.Let's say you invited him/her
at 12:00 at your home and that attacker told one of your
"friends" to call the victim at 12:15 and start talking
about something with the victim.The attacker again have time
to infect you.
Also the "friend" that is calling you may say something like
"Is there anyone around you,if so move somewhere
else I don't want anyone to hear what we are talking about"
The attacker is again alone and have time to infect you.

6.5 Trick

This is one trick that may work on people that really
want something and the attacker knows what is it.
Let's say that the victim wants to watch some porno
or want xxx passwords,then attacker can just leave
a diskette with the trojan in the front of the victim's
house and put the trojan with some xxx pics of course.

This is bad things because sometimes if you really want
something and you finally found it you don't think about
anything else except to check it you.You again get infected.

I hope now you understand how you got infected the last time
(if you got infected of course).

7.How dangerous a trojan can be?

Many people that don't know what a trojan is
think that when they run an executable nothing
happened because their computer is still working
and all the data is there,if it was a virus
their data will be damaged and their computer will
stop working.

Someone is downloading and uploading files on your computer.
Someone is reading all of your IRC logs and learning
interesting things about you and your friends.
Someone is reading ALL of your ICQ messages.
Someone is deleting files on your computer.

These are some examples how dangerous a trojan can be.
There people that use trojans just to place virus
on the infected machine like CIH and destroy the machine.

8.Different Kinds Of Trojans
Remote Access Trojans

These trojans are the most popular trojans now.
Everyone wants to have such trojan because he
or she want to have access to their victim's hard drive.
The RAT'S (remote access trojans)are very
simple to use.Just make someone run the server
and you get the victim's IP and you have FULL
access to his or her computer.They you can
almost everything it depends of the trojan you use.
But the RAT'S have the common remote access trojan functions like:
keylogger,upload and download function,
make a screen shot and so on.Some people use the
trojans for malicious purposes.
They want just to delete and delete.This is lame.But a have a guide
about the best way to use a trojan.You should read it.
There are many programs out there
that detects the most common trojans,but new trojans are
coming every day and these programs are not the maximum defense.
The trojans do always the same things.
If the trojan restart every time Windows is loaded that
means it put something in the registry
or in win.ini or in other system file so the trojan can restart.
Also the trojans create some file in
the WINDOWS\SYSTEM directory.The file is always looking
to be something that the victim will think
is a normal WINDOWS executable.Most trojans hide
from the Alt+Ctrl+Del menu.This is not
good because there are people who use only this way to see
which process are running.There are programs
that will tell me you exactly the process and the
file from where it comes.Yeah but some trojans
as I told you use fake names and it's a little hard
for some people to understand which process
should they kill.The remote access trojans opens
a port on your computer letting everyone to connect.
Some trojans has options like change the port
and put a password so only the guy that infect you
will be able to use the computer.The change
port option is very good because I'm sure you
don't want your victim to see that port 31337 is open
on their computer.Remote access trojans are
appearing every day and they will continue to appear.
For those that use such trojans: BE CAREFUL
you can infect yourself and they the victim you
wanted to destroy will revenge and you'll be sorry.
Password Sending Trojans

The purpose of these trojans is to rip all cached
passwords and send them to specified e-mail
without letting the victim about the e-mail.
Most of these trojans don't restart every time Windows
is loaded and most of them use port 25 to
send the e-mail.There are such trojans that e-mail
other information too like ICQ number
computer info and so on.These trojans are dangerous if
you have any passwords cached anywhere on your computer.

These trojans are very simple.The only one thing
they do is to log the keys that the victim is pressing
and then check for passwords in the log file.
In the most cases these trojans restart every
time Windows is loaded.They have options
like online and offline recording.In the online recording
they know that the victim is online and
they record everything.But in the offline recording
everything written after Windows start is
recorded and saved on the victims disk waiting for
to be transferred.

The only one function of these trojans is to
destroy and delete files.This makes them very simple
and easy to use.They can automatically
delete all your .dll or .ini or .exe files on your computer.
These are very dangerous trojans and once
you're infected be sure if you don't disinfect your
computer information will no longer exist.
FTP trojans

These trojans open port 21 on your computer
letting EVERYONE that has a FTP client to connect
to your computer without password and will full upload and download options.

These are the most common trojans.They all are dangerous
and you should me careful using them.
9.Who Can Infect You?

Well basically you can get infected by everyone that know how
to use a trojan(it's VERY easy) and of course know how to infect you.
People that use trojans are wannabe hackers that are just at the stage
of using trojans.Some of these people don't move to the next stage
and they're lamers that can only use trojans and as I said it's VERY easy.
But after reading this text you'll know the most common ways that someone
can infect you with a trojan and it will be hard for the people using them
to infect you.
10.What Is The Attacker Looking For?

Some of you may think that trojans are used for damage only.
Well they can also be used to spy on someone's machine and
take a lot of private information from it.Wellthe common data an attacker looks
for would include but not limit to the following.

-----> Credit Card Information
-----> Credit Information
-----> Checking Account Information
-----> Any accounting data
-----> Data bases
-----> Mailing Lists
-----> Personal Addresses
-----> Email Addresses
-----> Account Passwords
-----> Home Office / Small Business Information
-----> Company Accounts / Subscribed for Services
-----> Resumes
-----> Email
-----> Any Company Information / Services He Can Access
-----> Your or spouse's first and last name
-----> Children's names / ages
-----> Your address
-----> Your telephone number
-----> Letters you write to people
-----> Email
-----> Your personal resume
-----> Your family pictures
-----> School work
-----> Any school accounts / information
wanna know moreeeeeeeeeeeeeeeeeeeeeeeee
Trojan Part 2
11.How The Trojans Works

Here I'll explain you how the trojans work.If you don't know some words
you can check the "Terms Used In The Text" section and read about them there.
When the victim runs the server it does functions like opening some specific port and listening
for connections.It can use TCP or UPD protocols.
When you connect with the victim IP the you can do what you want because the server let you do
the trojan functions on the infected computer.Some trojans restart every time Windows is loaded.
They modify win.ini or system.ini so the trojan can restart but most of the new trojans use the
registry so they can restart.
Trojans communicate like client and server.The victim runs the server,the attacker sends command
to the infected server with the client and the server is just following what the client "says" to it.

12.The Most Common Trojan Ports
Here's a list of the most common trojan ports:

Satanz Backdoor|666
Doly Trojan|1011
Psyber Stream Server|1170
Ultors Trojan|1234
VooDoo Doll|1245
Trojan Cow|2001
Deep Throat|2140
The Invasor|2140
Phineas Phucker|2801
Masters Paradise|30129
Portal of Doom|3700
Sockets de Troie|5000
Sockets de Troie 1.x|5001
Blade Runner|5400
Blade Runner 1.x|5401
Blade Runner 2.x|5402
Remote Grab|7000
NetMonitor 1.x|7301
NetMonitor 2.x|7306
NetMonitor 3.x|7307
NetMonitor 4.x|7308
Portal of Doom|9872
Portal of Doom 1.x|9873
Portal of Doom 2.x|9874
Portal of Doom 3.x|9875
Portal of Doom 4.x|10067
Portal of Doom 5.x|10167
Senna Spy|11000
Progenic trojan|11223
Hack?99 KeyLogger|12223
Whack-a-mole 1.x|12362
NetBus 2 Pro|20034
Evil FTP|23456
Ugly FTP|23456
Back Orifice|31337
Back Orifice|31338
NetSpy DK|31339
The Spy|40412
Masters Paradise|40421
Masters Paradise 1.x|40422
Masters Paradise 2.x|40423
Masters Paradise 3.x|40426
Sockets de Troie|50505
Remote Windows Shutdown|53001
The tHing|6400
NetBus 1.x|12346
NetBus Pro 20034
Silencer |1001
Millenium |20000
Devil 1.03 |65000
NetMonitor| 7306
Streaming Audio Trojan| 1170
Socket23 |30303
Gatecrasher |6969
Telecommando | 61466
Gjamer |12076
IcqTrojen| 4950
Priotrity |16969
Vodoo | 1245
Wincrash | 5742
Wincrash2| 2583
Netspy |1033
ShockRave | 1981
Stealth Spy |555
Pass Ripper |2023
Attack FTP |666
GirlFriend | 21554
Fore, Schwindler| 50766
Tiny Telnet Server| 34324
Kuang |30999
Senna Spy Trojans| 11000
WhackJob | 23456
Phase0 | 555
BladeRunner | 5400
IcqTrojan | 4950
InIkiller | 9989
PortalOfDoom | 9872
ProgenicTrojan | 11223
Prosiak 0.47 | 22222
RemoteWindowsShutdown | 53001
RoboHack |5569
Silencer | 1001
Striker | 2565
TheSpy | 40412
TrojanCow | 2001
UglyFtp | 23456
WebEx |1001
Backdoor | 1999
Phineas | 2801
Psyber Streaming Server | 1509
Indoctrination | 6939
Hackers Paradise | 456
Doly Trojan | 1011
FTP99CMP | 1492
Shiva Burka | 1600
Remote Windows Shutdown | 53001
BigGluck, | 34324
NetSpy DK | 31339
Hack?99 KeyLogger | 12223
iNi-Killer | 9989
ICQKiller | 7789
Portal of Doom | 9875
Firehotcker | 5321
Master Paradise |40423
BO jammerkillahV | 121

13.How Can I Monitor My Computer Without Scanner?

Again the masses think that when they have some
trojan scanner or anti-virus one they're secure.
Well the best way you can check for trojans is to do
it by your own.You're not sure is the trojan scanner
working correctly so start checking it alone.
In this text I've included one list of software and
reviews of course that will help you check your system
for trojans.

Well you always need to check which ports are opened on
your system and if you see that one of the common trojan
ports is open you're probably infected.
You can check that by typing "netstat"
in the MS-DOS prompt or use other software
that can do this for you
Always pay attention to which files are running on your
computer and check for something suspicious in it like
it's name.Well I think you'll check files like
config.EXE,himem.exe or winlilo.exe or other funny one.
Just Hex Edit them and if you find something interesting
like "SchoolBus Server" kill the running file.
Make sure you're monitoring your registry and check
every new change in it.Also be sure you monitor
system.ini or win.ini because there're still
trojans that restart from there.
And as I told you always download software like
ICQ,MIRC or some other well known program from
the official page.
Following these simple rules will help you
prevent your computer from getting infected.

14.Software To Help You Monitor Your Computer

As I told you I've included one list of software
that will help you monitor your computer and help
you prevent trojan infections.


Files and directories monitoring tool
Version: 1.3.4
Home page:
Author: Vadim Dumbravanu,

Log Monitor is a files and directories monitoring tool. The program
periodically checks selected file's modification time and executes
external program if file's time was changed or not changed. For
directories it handles such events as files change, addition or

Works under Windows 95/98/NT.

It's free for personal and business use. See LICENSE.TXT for
copyright information.

This file contains following topics:

1. Purpose
2. Usage
3. Some features
4. Installation
5. Uninstallation


The program is intended for different administrators using
automated processes. From time to time these processes stop working
or can even terminate abnormally. Sometimes processes create or
update error log-files. Log Monitor can watch over such processes
via their log-files and warn administrators about problems.

Users can watch over common network folders and see what happens
within their directories.

Most of automated processes track log-files, periodically updating
them. Accordingly, if such process will terminate abnormally,
log-files cease changing.

If the process did not update the log-file during selected
interval, Log Monitor runs an external program. It can be "net send
bla bla bla", or paging program, or process restart. Log Monitor
can run a program if the file was changed too, so you can check
error files for changes.

Log Monitor can also watch over directories and handle files
change, addition or removal events within directory tree.

Log Monitor can be used as a task scheduler. NT Scheduler Service
is uncomfortable if you need to run a task every hour for example.
Using Log Monitor you can add nonexisting file, then select
interval of 3600 seconds and the program. As long as the file does
not update, selected program will run every hour.

You can specify working time and days when program will be

- Several files or directories can be monitored simultaneously,
each file has its own interval and is processing in a separate
- A list of monitoring processes stores in the configuration file.

- Minimizes to the System Tray (and restores from it). ;)

- There is an ability to pause monitoring of selected files.
"Paused" state can be stored in the configuration file.

- Works on the schedule, can check files and directories only during selected time interval and days of week or month.

- Many other really beautiful things.


PrcView is a freeware process viewer utility that shows comprehensive
information about running processes. This information includes such
details as the creation time, version and full path for each DLL used
by a selected process, a list of all threads, memory blocks and heaps.
PrcVIew also allows you to kill and attach a debugger to a selected process.
PrcView runs on both Windows 95/98 and Windows NT platforms and includes
Windows and command-line version of the program.
This software is free and freely distributable on a non-commercial basis in the format
ORIGINALLY RELEASED ( with the original Copyright clause.
The author expressly disclaims any warranty for this software. This software and
any related documentation is provided "as is" without warranty of any kind.

Distribution of the program or any work based on the program by a commercial
organization to any third party is permitted only with the written permission of the author

If you encounter a problem while running PrcView, please visit to obtain the latest version. If you still have problems,
please send a short description to:


XNetStat is a program like the "netstat"
command in the MS-DOS promt.The programs
shows you all of the open ports of your computer
and all of the established connections.
Mail if you want it
or have questions about it.


AtGuard is a nice firewall with some cool
features.It can also show you which file
opened a connection from your computer
that is VERY useful if you want to detect
some trojans on your machine.
I currently lost the URL for that program
but try searching

-----ConSeal PC FIREWALL+

This software will help you to secure your PC.
It has some major advantages over other PC-based firewalls.
It is available on Windows 95, Windows 98 and Windows NT
(3.51 & 4.0).
This is probably the best firewall for Windows machines
that will help you block trojans ports on your machine
and also against various D.O.S attacks.


This is really good anti-trojan package that detects
a LOT of trojans and other tools and also acts as a firewall,
protect you against nuke and ICQ attacks.It also
block file sharing so you won't have problems with it.
It's updated regulary with many new trojan definitions.
A must have for those of you that want to be protected
against attacks and trojan infections.

You can get it at


Trojan Defence Suite is also one very good
anti trojan package with a lot of functions and
plugins in it.It also detects probably all of
the trojans out there and is regulary updated.
A must have for those of you that want to be protected
against attacks and trojan infections.

You can get it at

Using all of these tools of course with the anti-trojan
packages will result in one SECURE against trojans
Windows machine so go and get them.

15.Placing BackDoors In Programs

The people that infect with trojans are becoming smarter.
They started placing the trojans in some real programs that
everyone is using so they can infect the victim.
Most of the people know that when they run a trojan
nothing will happen or an error message will apear,but
when the trojan is "joined" with another program
the program will work normally without any error messages
and the victim will think that he/she is not infected.
That's not right.Programmers made such programs that
just "join" two or more executables in one so they
can place the trojan in some programs that everyone
know about.
Such well known programs with open source are
also very dangerous.Good programmer may modify
the source and make it like a trojan so let's
say you're using modified e-mail client.As well
all know the password sending trojans use port 25
to send the e-mail with the information.How about
if the attacker modified the e-mail client to send
your e-mail password to him/her.You'll of course
see(if you're monitoring)that port 25 is open but
probably you won't pay attention because you're sending
e-mails and that's why the port is open.
As I said people are becoming smarter and smarter.

Source: taksaalisingh