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Research on Hiding Technology of DLL Trojan Horse

Author: SiLuJie
Tutor: HuJianWei
School: Xi'an University of Electronic Science and Technology
Course: Circuits and Systems
Keywords: DLL Trojan Trojan hidden Trojan Detection
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 171
Quote: 1
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Abstract


The rapid development of computer and network technology has brought great changes to society . With the development of technology , people enjoy the convenience of technology at the same time , the dependence on computer also will enhance . More and more the emergence of new viruses , make people look more gathered in the computer network security . Trojan technology is also accompanied by the development of computer systems and network technology continue to upgrade , and always walk in the forefront of technology . Especially Trojan hidden technology , it is a manifestation of the Trojan viability , to determine the degree of impact on the target as well as the survival time of the Trojans in the host computer . This paper studies the DLL Trojan hidden technology . Introduces the first Trojan characteristics and course of development of the technology , and then elaborated several hidden based on ROOTKIT technology DLL Trojan technology . These technologies include: DLL is injected into any of a host address space of the process to establish a remote thread ; DLL Trojan removal from host process module linked list ; removed from the system process list hosting process ; hooked SSDT in Traverse system process list and process module function and filter out the DLL Trojan is detected ; modify VAD DLL module and the host process information ; Finally, hide the tray icon of the hosting process . Able to restore the system process list , after the the DLL Trojans completed their function , and restore the system to normal state before the implant Trojan . Finally , on a Windows XP system functional testing , testing and related tools . The test results show that the Windows XP system can successfully evade detection tool detection , to achieve the desired design objectives .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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