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. Some Trojans has unique options like get ICQ UIN, add me to the victim contact list, ICQ spy that let’s you see all the messages that the victim is sending via ICQ etc.

Trojans are dangerous thing and they can destroy completely. A lot of people ask,what will the hacker do once he’s on your computer?
Well the common data a hacker 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

No one wants to see this information on some pages because it’s your privacy.Trojans are made every day by the programmers with new options and with better encryption so the Anti-Trojan software can’t detect them. So no one knows how many the Trojans on the net are. 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 suspected. 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.

Tags: shareware threat, trojans, Vulnerable downloads