SOME HOW spreading of virus

The withdrawal of virus biological virus must have spread to the media,
computer viruses can spread to a variety of computer / machine also through other
various media, including:

1. Floppy disks, storage media R / W, flash disk
External storage media can be a soft target for the virus to
be the media. Well as a place to live or as a media distribution.
Media bias operation R / W (Read and Write) is possible
infected for the virus and serve as the distribution media.

2. Network (LAN, WAN, etc.)
Relationships between some computer directly is very feasible
virus took a move occurs when the exchange / pengeksekusian file that
contain viruses.

3. Internet
Site may be a very deliberate planted a "virus" that will
infectedcomputers that access it.

4. Software Freeware, Shareware or even pirated
Many viruses are deliberately planted in a program that
distributed either free, or trial version.

5. Attachment on the email, Transferring files
Almost all of the spread of the virus, the use email
attachment because of all Internet users use email surely
to communicate, these files are made intentionally light / attract attention, even
double often have the extension on the file naming.

telusuri

telusuri

Multi Partition Virus

This virus is a combination of boot sector viruses and file viruses. This means working
the result in two, namely he can infected files or *. EXE
*. COM and infected boot sector.

Virus File / Program

This virus menginfeksi files that can be executed directly from the system
operation, whether the files *. EXE, *. COM and also usually results from infection of this virus
may be changing with the size of the file that attack.

Polymorphic Virus

This virus is designed for lead on antivirus program, it means the virus is always 
trying to avoid being identified by antivirus is always changing with the change 
structure each time the file is complete menginfeksi / other programs. 
Examples of viruses: 
- Necropolis A / B, 
infect file *. EXE and *. COM; 
The length of the file 1963 bytes; 
Characteristics: live in the memory, the size and hidden virus, encrypted, and can 
changed the structure change 
- Nightfall,Menginfeksi file *. EXE; 
The length of the file 4554 bytes; 
Characteristics: live in the memory, the size and hidden virus, has triggered, 
encrypted and can change the structure

Stealth Virus

This virus will be the table on the DOS interrupt that often we know 
with the "interrupt interceptor". capable this virus to control 
instructions DOS level and are usually hidden according to their good name 
or full size. 
Examples of viruses: 
- Yankee.XPEH.4928, 
infect file *. COM and *. EXE; 
Length of 4298 bytes; 
Characteristics: live in the memory, the size of hidden, have triggered 
- WXYC (a category including the boot record is also due to enter stealth kategri 
also included here), an infect Floopy motherboot record; 
Length of 520 bytes; 
Characteristics: live in the memory; size and hidden viruses. 
- Vmem (s): 
Menginfeksi files *. EXE, *. SYS and *. COM; 
Fie 3275 bytes long; 
Characteristics: live in the memory, the size of hidden, in the encryption.

Boot Sector Virus

 
Boot sector virus is spread is a common one. This virus in 
reproduce itself, will have to move or replace the original boot sector 
podići program with the virus. So when the virus occurs podići akan loaded 
to memory and then the virus will have the ability to control 
standard hardware (eg monitor, printer etc.) and also from the memory of this virus akan 
spread to all who have the drive and connected to the computer (for example: 
Floopy, drive other than drive c:). 
Examples of viruses: 
- Variant virus wyx 
ex: wyx.C (B) menginfeksi boot record and Floopy; 
Length: 520 bytes; 
Characteristics: Memory resident and encrypted. 
- Variant V-sign: 
attack: Master Boot Record; 
Length of 520 bytes; 
Characteristics: live in the memory (memory resident), encrypted, and polymorphic) 
- Stoned.june 4th / bloody!: 
infect: Master Boot Record and Floopy; 
Length of 520 bytes;

Macro virus

 
This type of virus is certainly very often we hear. This virus was written with 
programming language of an application is not the programming language of an Operating System. This virus can be run when the application can creating it self 
running well. For example, if the computer is run mac application 
Word, the macro virus that is made from the Word macro language can be worked on 
system Mac computer is operating. 
Examples of viruses: 
- Variant W97M, eg W97M.Panther 
Length of 1234 bytes, will infect NORMAL.DOT and infect document 
when opened. 
- WM.Twno.A; TW 
The length of 41,984 bytes, will infect document using Ms.Word 
macro language, usually extention: . . DOC and DOT