关键词：键盘记录；木马；目标主机
The Design and Development of a Simple Trojan horse
Abstract
With the rapid development of Internet technology, the network has posed many conveniences, but it also brings a lot of trouble. Various website Trojan, backdoor, downloading, viruses, using various loopholes, U disk, social engineering, is pervasive on the Internet. For the majority of users, it will bring on important information missed and early leaked, photograph maliciously spread to the Internet, the system trays System being watched, cameras opened and other very serious consequences.
In this design, a simple Trojan horse is developed with Visual C++ 6.0,it’s functions include :Disk recording, Timing sends the content of the mail item sent to a successful mail, Close of certain firewall and anti-virus software, Automatically and hidden operation after booted, Open the 2233 port and get the CMD authority to operate the target machine's papers, Open the 3389 port and replace sethc.exe of cmd.exe under the system directory to realize when you login system the password is not necessary and add administrators. On the other side , the function also include: Utilizing MS06-014 or MS07-004 and other loopholes, The Trojan horse can spread on Internet through the website ,which did not patch the system or anti-virus software ,or not update Windows 2000 windows XP, Windows 2003 in-time.
Key words: Disk recording; Trojan; Targets mainframe
