Malicious code, also known as malware, installed on a computer provides an attacker with the control over this machine. Therefore, malware can be defined as “a set of instructions that run on your computer and make your system do something that an attacker wants to do”. It is more common to see malicious code to be implemented in binary executable files. However, it can be implemented in almost any computer language. Attackers have used a huge number of scripting languages, word processing macro languages and a h...
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...he Trojan horse, users should be familiar with all the programs that should normally run on their systems. Once there is an addition or alteration, it is easy to notice and investigate. Another technique that is often used by attackers involves using wrapping programs, that are combining both malicious and original code. Once run on the victim’s computer the program first installs malicious code, and then executes the original code.
Erbschloe, Michael “Trojans, Worms, and Spyware. A Computer Security Professional’s Guide to Malicious Code”, Elsevier Inc, 2005
Nazario, Jose “Defense and Detection Strategies against Internet Worms”, Artech House Computer Security Library, 2004
Skoudis, Ed, Zeltser, Lenny “Malware: Fighting Malicious Code”, Prentice Hall, 2003
Zesheng Chen, Lixin Gao, Chuanyi Ji “On Effectiveness of Defense Systems Against Worms”
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