Viruses are EASY to make, with little programming knowledge. I can make one in as little as 5 minutes and it would not be detected by any modern virus detector. The hard part is GETTING IT DISTRIBUTED. The hardest way (but most commonly successful) is using an Internet Explorer security hole, of which you usually have to find yourself. The other way is by getting the user to download it thinking that it is a legitimate file. EVEN EXPERIENCED COMPUTER PROFESSIONALS download these types of files.
NOW, there is one type of virus that (to my belief) would even get past a Virtual Machine running an operating system. That would be an MBR virus. There is a new strain that could successfully attack Windows from the outside, running arbitrary code once logged in. I was infected with this type of virus while using a copy of BartPE and it managed to cross-over to my Windows XP installation on my HD from an MBR. I now need to buy an external harddrive in order to backup my *20GB of data in order to format to get rid of the virus in the boot record.
However, most people don’t realize this but using a bit of creativity there is a way to REPAIR ANY COMPUTER infected with a virus using BartPE with customized programming. That is actually what I was working on before I got infected, ironically enough. Good thing, I guess because before that I never knew it was possible for an MBR virus to run arbitrary code in that manner. After research, I found that a company created and released their source code for an example of the method (the same one used), knowing that it could and probably would be used for virus purposes. Now if Microsoft made a way for the MBR to be LOCKED (un-editable) while in Windows (because no legitimate program would change it) then this sort of thing wouldn’t happen.. Well, I guess Microsoft can’t account for everything, but for their mistakes they do keep alot of guys like me in the business LOL, or at least keep up busy!
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