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Injected Evil (executable files infection)

Z0mbie
29a [7]
February 2004

3
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Abstract

Here will be described some rare method of executable files infection. It is based on parsing trojan code into instructions, and injecting these instructions into free areas (alignment) between subroutines of the target file. This idea is not new, and probably has always been used in some viruses. Also, under executable files i'll mean executable ELF files for x86 platform, though it can be win32 PE files too.

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