Trojan Ports List

Commonly referred to as remote access Trojans or R.A.T.s. It is a program that gives a hacker or cracker more power over your computer than you may have. Trojans can be very small in size, as little as 8 kb, and can be hidden inside other executables.

How does a Trojan work?

First the Trojan must be delivered to your computer. This can be accomplished in many ways, through an e-mail worm, or hidden in another executable program like an mp3 song or a free game or picture. Running the program installs the Trojan on your computer. The Trojan is really two programs in one. The first part is called the "client" and is used by the hacker to control the victim’s computer. The client is not installed on your computer but on the hacker’s. The second part is the "server" and it is installed on your computer. Once executed this "server program" will provide information to the client program upon request. This server program once installed hides itself on your computer and will run automatically every time you start the computer.

How can I get infected by a Trojan?

Trojans can be embedded in any executable file. The critical thing here is that the file must be executed to install the Trojan on your computer. Trojans can be sent via e-mail, ICQ, mIRC or IRCLE, FTP, Freeware or Shareware programs, mp3 and even movies.

Sponsored Content

Maximize Value from Microsoft Defender

In this ebook, you’ll learn why Red Canary’s platform and expertise bring you the highest possible value from your Microsoft Defender for Endpoint investment, deployment, or migration.

How can I tell if I’ve got a Trojan on my system?

Many freeware or commercial software packages will let you scan your computer for known Trojan files or behavior, but one easy method is by looking at your computer’s open ports, ports used by the Trojan to accept incoming connections. One good and freeware tool that can do that is LPS – Local Port Scanner 1.2.2 that will scan for any given local port, has some built-in Trojan detection functionality. It will also let you scan a remote system (I’ll make a dedicated page on that later this week) and will log the output.

Download from HERE or from THERE (562kb)

For other easy methods of scanning your own local open ports see Quickly Find Local Open Ports and Quickly Find Local Open Ports – GUI.

See the information below for a list of many of the known Trojan horses:

(Taken from

Your browser does not support inline frames or is currently configured not to display inline frames.

Looking for a TCP/IP port used by a Trojan?

Enter your information below. A port number, such as 80 in the port field, will display all services, Trojans and viruses that are known to use this port. Type sub in the ‘Data to Search For’ field, and all the services, Trojans and viruses with sub in their name will be displayed.

Related Articles

Related Topics:

External Sharing and Guest User Access in Microsoft 365 and Teams

This eBook will dive into policy considerations you need to make when creating and managing guest user access to your Teams network, as well as the different layers of guest access and the common challenges that accompany a more complicated Microsoft 365 infrastructure.

You will learn:

  • Who should be allowed to be invited as a guest?
  • What type of guests should be able to access files in SharePoint and OneDrive?
  • How should guests be offboarded?
  • How should you determine who has access to sensitive information in your environment?

Sponsored by:

Office 365 Coexistence for Mergers & Acquisitions: Don’t Panic! Make it SimpleLive Webinar on Tuesday, November 16, 2021 @ 1 pm ET

In this session, Microsoft MVPs Steve Goodman and Mike Weaver, and tenant migration expert Rich Dean, will cover the four most common steps toward Office 365 coexistence and explain the simplest route to project success.

  • Directory Sync/GAL Sync – How to prepare for access and awareness
  • Calendar Sharing – How to retrieve a user’s shared calendar, or a room’s free time
  • Email Routing – How to guarantee email is routed to the active mailbox before and after migration
  • Domain Sharing – How to accommodate both original and new SMTP domains at every stage

Aimed at IT Admins, Infrastructure Engineers and Project Managers, this session outlines both technical and project management considerations – giving you a great head start when faced with a tenant migration.the different layers of guest access and the common challenges that accompany a more complicated Microsoft 365 infrastructure.

Sponsored by: