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Trojan Horse/Spyware Attacks
What is Spyware?
Spyware is often referred to as
data-mining, aggressive advertising, Trojans, dialers, malware, browser
hijackers, and tracking components. This rather comprehensive listing of
the varying types and degrees of sypware is from the Lavasoft website who
produces one of the best as well as free detectors, Adaware. This type
of annoyance enters your computer through vulnerabilities which could include
email that's not monitored by virus programs, popups, or by just going
to certain sites and logging on. Many are nothing more than data miners
which look for advertising information such as what part of the world you
live in etc., to those that will brand your programs with information and
steal your browser's homepage. Some have the capabilities of telling your
computer to dial certain numbers automatically.
Data miner
The application is designed to
collect information about the user and does so actively. This may or may
not include transmission of the information to a remote server, but the
server is owned by the company producing the detected application and more
importantly, the information collected is disclosed to the user via privacy
policy and/or licensing.
Malware
These are malicious software designed
to do harm to a user's system or to other systems that is not specifically
a VIRUS.
Monitoring Tool
This category includes remote access
Trojans (RATs), Root Kits, etc.
Vulnerability
The application employs the use
of system and/or security vulnerabilities to install on a system and to
operate.
Misc
This category is for use with applications
that do not fall within the other categories but are noteworthy for the
user due to matching criteria listed in the TAC. The criteria however do
not point in the direction of a specific detection category.
Dialer
The application is designed to
change the user's DUN (Dial Up Networking) settings to dial numbers that
the user does not know about, to connect to a number in stealth, and/or
to avoid being detected by the user such as dialing expensive connections
where the user has not authorized the connection.
Worm
This is a self-replicating virus,
Trojan, and/or virus designed to propagate across many systems and/or networks.
While Ad-Aware does include some well know virus, Trojan, and worm content,
it is not an antivirus or antitrojan solution so it is important to make
sure that you have a specific solution installed on your system and/or
network.
MRU
This is a listing of the Most Recently
Used lists stored in your registry. They are harmless and consist only
of things such as the most recent document you opened. They are included
in Ad-Aware due to requests from users and to highlight the fact that they
are harmless where some antispyware applications will list them as being
potentially harmful in an attempt to appear to detect more content than
they actually do.
Spyware
These applications collect information,
may or may not install in stealth, and are designed to transmit that information
to 2nd, or 3rd parties covertly employing the user's connection without
their consent and knowledge. The word defines the actual intent; this is
software (ware) that is designed to collect information in secret (spy).
Adware
This is content that is designed
to display advertising to the user that may not be expected or wanted.
While some also categorize advertising applications that may include tracking
features or capabilities as Adware, we place them within more descriptive
categories such as Trackware or Data Miner to provide more information
to the user. Most often included in freeware bundles or as additional (and/or
required) content with shareware. Adware is generally innocuous and consumers
may want to remove this content if they no longer wish to receive the advertising
content. They may wish to keep them though if the programs are required
for the use of a host application.
Trackware
This category is separate from
Data Miners in that it is passive in nature. This category can and does
include content such as tracking cookies and those that collect only anonymous
information like GUID's and/or sites visited, etc and does not include
personally identifiable information.
Exploit
The application employs the use
of a software or system exploit to install and/or operate.
Keylogger
This category is for applications
that are designed to record and/or transmit keystroke information.
Annoyware
This is a special type of Adware
that causes an excessive number of popups/popunders, is designed to force
advertising even when not connected to the internet, can cause noticeable
system and/or bandwidth slowdowns, and in general is intrusive to the point
of frustrating the system user.
Hijacker
These applications are designed
to hijack the user's home page, HOSTS file, browser favorites, chosen search
engine, and/or system settings.
While there are many adware variations,
the fact remains that you need to keep them off your computer for the sake
of privacy, speed of browsing, or just to keep your browsing habits from
roaming eyes. Two excellent programs, both free, which can scan and fix
most adware problems include Lavasoft's Adaware and Moosoft's SpyBot. Downloading
details can be found on the Tools and Links
page using the button at the left. One of the best ways to avoid spyware
is to block popups. While many sites use popups for information you need
to see, most popups are for ads and useless information that slows your
browsing and can lead to spyware. Many programs are available to block
popups and many browsers such as Opera and Firefox have built in popup
blockers. Presently, Internet Explorer does not and if you use that browser,
you will have to piggyback a popup blocking program with it. One good application
for this is Popup Cop. While this is not a free program, you can download
it and try it before buying by clicking
here.
What is a trojan horse?
The Trojan Horse is aptly named
for its Greek mythology counterpart. The Greeks built and hid inside a
gift of a giant horse, only to find after they took it into their fortified
Troy, it became an instrument of war as the cleverly hidden soldiers slid
from the horse, opened the doors and allowed their fellows to enter.
Trojan Horses are executable programs,
which mean that when the file is opened, it will run and perform some action(s).
In the Windows operating system, executable programs have file extensions
like "exe", "vbs", "com", "bat", "pif", "scr", "lnk", or "js". Some of
the common trojan horse filenames include names like "dmsetup.exe", "Movie.avi.pif",
and "LOVE-LETTER-FOR-YOU.TXT.vbs."
The perp will send you an innocent
looking file which unknowingly, you open and maybe even enjoy running.
It could be spread disguised as literally anything people find desirable,
such as a free game, e-mails, pictures, mp3 song, clip art, you name it.
You could even download a trojan from a WWW or FTP archive, ICQ file exchange,
or through IRC programs. When you open the file, you begin its dirty work
and it imbeds itself on your computer. Many people use Outlook or Outlook
Express as their mail program. There are certain safeguards that you can
setup to help eliminate trojans from entering through e-mail. See the Tools
& Links page.
How does the trojan horse work?
A trojan horse allows another user
other than yourself, to propagate a program within your computer that will
allow them to take control of your operating system. With this control,
they can do everything you can do-save and delete files, open Windows Explorer,
see your complete hard drive etc., operate your other drives like access
a CD, and even use the control panel to change settings. Whereas a trojan
horse can be used in a positive way by networking administrators and technicians
to actually log into your computer, assume control, or manage files, the
trojan horse you might run into online, has nothing good in mind. Additional
basics can be found at Trojan
Horse Attacks by Joseph Lo.
What could happen if you have
a trojan horse?
Many trojan horses also allow crackers
(aka "hackers") to take over your computer and "remote control" it. They
can literally do everything you can do sitting at your keyboard. In fact,
many programs actually enable the hacker to do more than you can.
It's possible the other user could take control of your computer, log online,
and browse the net using your computer.
Technical particulars-
How do they work? Protect2000
website gives this description:
There are 65535 ports or entries
available. A posible intruder will try to find out, if and what ports
on your system are opened. Usually, there will be several. After
finding an open port, the hacker will try to install the server software
on your system,or, in case you have already been infected, will discover
the server. Once the server is found, the hacker can use his client software;
think of it as a remote control. Depending on the kind of server, the hacker
can do many things; in the worst case he (or she) will take over your system
completely, use your e=mail program, up or download files, listen in if
you have an open mic, corrupt your data and files, make your pc crash and
even format your C disk or other disks. Scary? You bet.
Trojan programs-
Apparently, the trojan horse idea
was used by some computer companies a few years back for technical assistance.
If a user had problems, they would call support at the company, the tech
would use a remote access program, a trojan horse, and get into their computer,
look at it, and hopefully fix it on the spot. Great idea had others not
figured out ways to use it who had other ideas in mind. Several notable
and common trojan horse programs are BackOriface, NetBus, and Remote Administrator.
Listing of ports trojans will
"sniff" out-
Through some internet research,
this listing of ports and the trojans that typically use them is only helpful
if you have a firewall program operating that will report which port is
being probed. Zone Alarm will do this as well as others. The list of ports
is as follows and lock up these ports....protect yourselves:
2 - Death
21 - Back Construction, Blade Runner,
Doly Trojan, Fore, FTP trojan, Invisible FTP, Larva, MBT, Motiv, Net Administrator,
Senna Spy FTP Server, WebEx, WinCrash
23 - Tiny Telnet Server, Truva
Atl
25 - Aji, Antigen, Email Password
Sender, Gip, Happy
99, I Love You, Kuang 2, Magic
Horse, Moscow Email Trojan, Naebi, NewApt, ProMail trojan, Shtrilitz, Stealth,
Tapiras, Terminator, WinPC, WinSpy
31 - Agent 31, Hackers Paradise,
Masters Paradise
41 - DeepThroat
48 - DRAT
50 - DRAT
59 - DMSetup
79 - Firehotcker
80 - Back End, Executor, Hooker,
RingZero
99 - Hidden Port
110 - ProMail trojan
113 - Invisible Identd Deamon,
Kazimas
119 - Happy 99
121 - JammerKillah
123 - Net Controller
133 - Farnaz, port 146 - Infector
146 (UDP) - Infector
170 - A-trojan
421 - TCP Wrappers
456 - Hackers Paradise
531 - Rasmin
555 - Ini-Killer, NeTAdministrator,
Phase Zero, Stealth Spy
606 - Secret Service
666 - Attack FTP, Back Construction,
NokNok, Cain & Abel, Satanz Backdoor, ServeU, Shadow Phyre
667 - SniperNet
669 - DP Trojan
692 - GayOL
777 - Aim Spy
808 - WinHole
911 - Dark Shadow
999 - DeepThroat, WinSatan
1000 - Der Spacher 3
1001 - Der Spacher 3, Le Guardien,
Silencer, WebEx
1010 - Doly Trojan
1011 - Doly Trojan
1012 - Doly Trojan
1015 - Doly Trojan
1016 - Doly Trojan
1020 - Vampire
1024 - NetSpy
1042 - Bla
1045 - Rasmin
1050 - MiniCommand
1080 - WinHole
1081 - WinHole
1082 - WinHole
1083 - WinHole
1090 - Xtreme
1095 - RAT
1097 - RAT
1098 - RAT
1099 - BFevolution, RAT
1170 - Psyber Stream Server, Streaming
Audio trojan, Voice
1200 (UDP) - NoBackO
1201 (UDP) - NoBackO
1207 - SoftWAR
1212 - Kaos
1225 - Scarab
1234 - Ultors Trojan
1243 - BackDoor-G, SubSeven, SubSeven
Apocalypse, Tiles
1245 - VooDoo Doll
1255 - Scarab
1256 - Project nEXT
1269 - Mavericks Matrix
1313 - NETrojan
1338 - Millenium Worm
1349 (UDP) - BO DLL
1492 - FTP99CMP
1509 - Psyber Streaming Server
1524 - Trinoo
1600 - Shivka-Burka
1777 - Scarab
1807 - SpySender
1966 - Fake FTP
1969 - OpC BO
1981 - Shockrave
1999 - BackDoor, TransScout
2000 - Der Spaeher 3, Insane Network,
TransScout
2001 - Der Spaeher 3, TransScout,
Trojan Cow
2002 - TransScout
2003 - TransScout
2004 - TransScout
2005 - TransScout
2023 - Ripper
2080 - WinHole
2115 - Bugs
2140 - Deep Throat, The Invasor
2155 - Illusion Mailer
2283 - HVL Rat5
2300 - Xplorer
2565 - Striker
2583 - WinCrash
2600 - Digital RootBeer
2716 - The Prayer
2773 - SubSeven
2801 - Phineas Phucker
3000 - Remote Shutdown
3024 - WinCrash
3128 - RingZero
3129 - Masters Paradise
3150 - Deep Throat, The Invasor
3456 - Teror Trojan
3459 - Eclipse 2000, Sanctuary
3700 - Portal of Doom
3791 - Eclypse
3801 (UDP) - Eclypse
4000 - Skydance
4092 - WinCrash
4242 - Virtual hacking Machine
4321 - BoBo
4444 - Prosiak, Swift remote
4567 - File Nail
4590 - ICQTrojan
5000 - Bubbel, Back Door Setup,
Sockets de Troie
5001 - Back Door Setup, Sockets
de Troie
5010 - Solo
5011 - One of the Last Trojans
(OOTLT)
5031 - NetMetropolitan
5031 - NetMetropolitan
5321 - Firehotcker
5343 - wCrat
5400 - Blade Runner, Back Construction
5401 - Blade Runner, Back Construction
5402 - Blade Runner, Back Construction
5550 - Xtcp
5512 - Illusion Mailer
5555 - ServeMe
5556 - BO Facil
5557 - BO Facil
5569 - Robo-Hack
5637 - PC Crasher
5638 - PC Crasher
5742 - WinCrash
5882 (UDP) - Y3K RAT
5888 - Y3K RAT
6000 - The Thing
6006 - The Thing
6272 - Secret Service
6400 - The Thing
6667 - Schedule Agent
6669 - Host Control, Vampyre
6670 - DeepThroat, BackWeb Server,
WinNuke eXtreame
6711 - SubSeven
6712 - Funny Trojan, SubSeven
6713 - SubSeven
6723 - Mstream
6771 - DeepThroat
6776 - 2000 Cracks, BackDoor-G,
SubSeven
6838 (UDP) - Mstream
6912 - Shit Heep (not port 69123!)
6939 - Indoctrination
6969 - GateCrasher, Priority, IRC
3, NetController
6970 - GateCrasher
7000 - Remote Grab, Kazimas, SubSeven
7001 - Freak88
7215 - SubSeven
7300 - NetMonitor
7301 - NetMonitor
7306 - NetMonitor
7307 - NetMonitor
7308 - NetMonitor
7424 - Host Control
7424 (UDP) - Host Control
7789 - Back Door Setup, ICKiller
7983 - Mstream
8080 - RingZero
8787 - Back Orifice 2000
8897 - HackOffice
8988 - BacHack
8989 - Rcon
9000 - Netministrator
9325 (UDP) - Mstream
9400 - InCommand
9872 - Portal of Doom
9873 - Portal of Doom
9874 - Portal of Doom
9875 - Portal of Doom
9876 - Cyber Attacker, RUX
9878 - TransScout
9989 - iNi-Killer
9999 - The Prayer
10067 (UDP) - Portal of Doom
10085 - Syphillis
10086 - Syphillis
10101 - BrainSpy
10167 (UDP) - Portal of Doom
10528 - Host Control
10520 - Acid Shivers
10607 - Coma
10666 (UDP) - Ambush
11000 - Senna Spy
11050 - Host Control
11051 - Host Control
11223 - Progenic trojan, Secret
Agent
12076 - Gjamer
12223 - Hack´99 KeyLogger
12345 - GabanBus, My Pics, NetBus,
Pie Bill Gates, Whack Job, X-bill
12346 - GabanBus, NetBus, X-bill
12349 - BioNet
12361 - Whack-a-mole
12362 - Whack-a-mole
12623 (UDP) - DUN Control
12624 - Buttman
12631 - WhackJob
12754 - Mstream
13000 - Senna Spy
13010 - Hacker Brazil
15092 - Host Control
15104 - Mstream
16660 - Stacheldracht
16484 - Mosucker
16772 - ICQ Revenge
16969 - Priority
17166 - Mosaic
17300 - Kuang2 The Virus
17777 - Nephron
18753 (UDP) - Shaft
19864 - ICQ Revenge
20001 - Millennium
20002 - AcidkoR
20034 - NetBus 2 Pro, NetRex, Whack
Job
20203 - Chupacabra
20331 - Bla
20432 - Shaft
20432 (UDP) - Shaft
21544 - GirlFriend, Kidterror,
Schwindler, WinSp00fer
22222 - Prosiak
23023 - Logged
23432 - Asylum
23456 - Evil FTP, Ugly FTP, Whack
Job
23476 - Donald Dick
23476 (UDP) - Donald Dick
23477 - Donald Dick
26274 (UDP) - Delta Source
26681 - Spy Voice
27374 - SubSeven
27444 (UDP) - Trinoo
27573 - SubSeven
27665 - Trinoo
29104 - Host Control
29891 (UDP) - The Unexplained
30001 - TerrOr32
30029 - AOL Trojan
30100 - NetSphere
30101 - NetSphere
30102 - NetSphere
30103 - NetSphere
30103 (UDP) - NetSphere
30133 - NetSphere
30303 - Sockets de Troie
30947 - Intruse
30999 - Kuang2
31335 (UDP) - Trinoo
31336 - Bo Whack, ButtFunnel
31337 ["ELEET" port] - Baron Night,
BO client, BO2, Bo Facil
31337 (UDP) ["ELEET" port] - BackFire,
Back Orifice, DeepBO, Freak>
31338 - NetSpy DK, ButtFunnel
31338 (UDP) - Back Orifice, DeepBO
31339 - NetSpy DK
31666 - BOWhack
31785 - Hack´a´Tack
31787 - Hack´a´Tack
31788 - Hack´a´Tack
31789 (UDP) - Hack´a´Tack
31791 (UDP) - Hack´a´Tack
31792 - Hack´a´Tack
32100 - Peanut Brittle, Project
nEXT
32418 - Acid Battery
33333 - Blakharaz, Prosiak
33577 - PsychWard
33777 - PsychWard
33911 - Spirit 2001a
34324 - BigGluck, TN
34555 (UDP) - Trinoo (Windows)
35555 (UDP) - Trinoo (Windows)
37651 - YAT
40412 - The Spy
40421 - Agent 40421, Masters Paradise
40422 - Masters Paradise
40423 - Masters Paradise
40426 - Masters Paradise
41666 - Remote Boot
41666 (UDP) - Remote Boot
44444 - Prosiak
47262 (UDP) - Delta Source
50505 - Sockets de Troie
50766 - Fore, Schwindler
51996 - Cafeini
52317 - Acid Battery 2000
53001 - Remote Windows Shutdown
54283 - SubSeven
54320 - Back Orifice 2000
54321 - School Bus
54321 (UDP) - Back Orifice 2000
57341 - NetRaider
58339 - ButtFunnel
60000 - Deep Throat
60068 - Xzip 6000068
60411 - Connection
61348 - Bunker-Hill
61466 - Telecommando
61603 - Bunker-Hill
63485 - Bunker-Hill
65000 - Devil, Stacheldracht
65432 - The Traitor
65432 (UDP) - The Traitor
65535 - RC
How to avoid becoming a trojan
horse victim-
-
run a good firewall program such as
Zone
Alarm or like those outlined on the Firewall page of this website.
Also, use software made specifically to sniff out trojans like The
Cleaner and don't forget to keep it updated.
-
don't download an executable program
just to "check it out" - if it's a trojan, the first time you run it, you're
already infected!
-
be aware that downloading blindly from
people or sites, whether you know about them or not, is risky.
-
you must be sure what the file is before
opening it if you decide to open it at all
-
beware of hidden file extensions
-
if you have programs that give options
to automatically open or get files, don't use them
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don't be lulled into a false sense
of security just because you run anti-virus programs-many don't check for
trojans and you must constantly update them
-
keep up to date at Dark-e.com
on the latest threats and how to keep them off your computer
Ways to get rid of trojans-
-
you may have to do a clean reinstall
of your operating system or have someone do it for you
-
maintain and update a trojan sniffer
like The Cleaner which can be run,
finding the trojan, and usually cleaning it from your system.
-
use a commercial anti-virus software
program
-
use a shareware anti-virus program
-
check sites on the net for help and
instruction. (check the "Tools and Links" page)
-
load a good firewall program to tell
you if someone is attempting to access your computer-check the Firewalls
page for more.
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