Still, I think it was helpful.
Thanks for this; I never really did know the TYPES of viruses.
All I ever bothered to learn was how to create them
Computer Science Canada Introduction to computer viruses!! |
| Author: | ashtonfarell [ Tue Feb 02, 2010 7:42 am ] |
| Post subject: | Introduction to computer viruses!! |
Types of Viruses 1. Polymorphic Virus 2. Stealth Virus 3. Retrovirus 4. Multipartite Virus 5. Armored Virus 6. Companion Virus 7. Phage Virus 8. Macro Virus Polymorphic Viruses - Polymorphic viruses change form in order to avoid detection. These types of viruses attack your system, display a message on your computer, and delete files on your system. The virus will attempt to hide from your antivirus software. Frequently the virus will encrypt parts of itself to avoid detection. When that happens it's called mutation. Stealth Virus - This type of virus attempts to avoid detection by masking itself from applications. It may attach itself to the boot sector of the hard drive. When a system utility or program runs, the stealth virus redirects commands around itself in order to avoid detection. An infected file may report a file size different from what is actually present in order to avoid detection. It may also move itself around your computer to different folders during a virus scan to avoid detection. Retrovirus - This virus attacks or bypasses the antivirus software installed on your computer. You can consider a retrovirus to be a "anti-antivirus". It can directly attack your antivirus software and potentially destroy the virus definition database file. This loss of information will leave you with a false sense of security. This type of virus may also directly attack the antivirus to create bypasses for the virus. Multipartite Virus - This virus attacks your system in multiple ways. It may attempt to infect your boot sector, infect all you executable files, and destroy your applications files. The hope her is that you wont be able to correct all the problems and will allow the infestation to continue. It attacks your boot sector, infects application files, and attacks your microsoft word documents. Armored Virus - This virus makes itself difficult to detect or analyze. Armored viruses cover themselves with protective code that stop debuggers or disassemblers for examining critical elements of the virus. The virus may be written in such a way that some aspects of the programming act as a decoy to distract analysis while the actual code hides in other areas in the program. The more time it takes to de-construct the virus, the longer it will live. The longer it can live, the more time it has to replicate and spread to as many machines as possible. Companion Virus - This virus attaches itself to legitimate programs and then creates a program with a different file extension. This file may reside on your systems temporary directory. When the user types the name of the legitimate program, the companion virus executes instead of the real program. This hides the virus from the user (effectively). Many of the viruses that are used to attack windows systems make changes to program pointers in the registry so that they point to the infected program. The infected program will perform it's dirty deed and then start the real program. Phage Virus - This virus modifies and alters other programs and databases. The virus infects all of these files. The only way to remove this type of virus is to reinstall the programs that are infected. If you miss even a single incident of this virus on the victim system, the process will start again and infect the system once more. Macro Virus - This virus exploits the enhancements made to many application programs. Programs such as word and excel allow programmers to expand the capability of the application. Word, for example, supports a mini - BASIC programming language that allows files to be manipulated automatically. These programs in the document are called macros. For example, a macro can tell your word processor to spell-check your document when it opens. Macro viruses can infect all the documents on you system and spread to other systems using mail or other methods. |
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| Author: | Euphoracle [ Tue Feb 02, 2010 9:14 am ] |
| Post subject: | RE:Introduction to computer viruses!! |
Thanks for the copy-and-paste. |
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| Author: | Insectoid [ Tue Feb 02, 2010 9:35 am ] |
| Post subject: | RE:Introduction to computer viruses!! |
http://cro-dota.org/forum/printthread.php?tid=154 |
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| Author: | qmanjr5 [ Tue Feb 09, 2010 11:43 am ] |
| Post subject: | RE:Introduction to computer viruses!! |
Still, I think it was helpful. Thanks for this; I never really did know the TYPES of viruses. All I ever bothered to learn was how to create them |
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| Author: | USEC_OFFICER [ Tue Feb 09, 2010 12:48 pm ] |
| Post subject: | RE:Introduction to computer viruses!! |
Nice, now I know, and knowing is half the battle. |
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| Author: | Turing_Gamer [ Tue Feb 09, 2010 12:49 pm ] |
| Post subject: | Re: Introduction to computer viruses!! |
Mark the descrpition of the viruses as a sticky. It could come in handy. |
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| Author: | USEC_OFFICER [ Tue Feb 09, 2010 1:00 pm ] |
| Post subject: | RE:Introduction to computer viruses!! |
What is a sticky? They always appear above the other threads, but they don't seem to do anything. |
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| Author: | SNIPERDUDE [ Tue Feb 09, 2010 1:21 pm ] |
| Post subject: | RE:Introduction to computer viruses!! |
A sticky is the same as any other thread, but is kept at the top of the thread index because they are noted as important. So when you search through the threads, the stickys will always be at the top so it is easy to find/access. |
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