Modern Diseases: Computer Viruses and Virus Treatment
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By Ted Jockey
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Computer Virus and Computer Worms and Definitions
D
Here is the difference between Virus, Worms and a Trojan Horse
Trojan Horse
Trojan horses are impostors—files that claim to be something desirable but, in fact, are malicious. A very important distinction between Trojan horse programs and true viruses is that they do not replicate themselves. Trojan horses contain malicious code that when triggered cause loss, or even theft, of data. For a Trojan horse to spread, you must invite these programs onto your computers; for example, by opening an email attachment or downloading and running a file from the Internet. Trojan.Vundo is a Trojan horse.
Worms
Worms are programs that replicate themselves from system to system without the use of a host file. This is in contrast to viruses, which requires the spreading of an infected host file. Although worms generally exist inside of other files, often Word or Excel documents, there is a difference between how worms and viruses use the host file. Usually the worm will release a document that already has the "worm" macro inside the document. The entire document will travel from computer to computer, so the entire document should be considered the worm W32.Mydoom.AX@mm is an example of a worm
Computer Virus
A computer virus is a small program written to alter the way a computer operates, without the permission or knowledge of the user. A virus must meet two criteria:
It must execute itself. It often places its own code in the path of execution of another program.
It must replicate itself. For example, it may replace other executable files with a copy of
the virus infected file. Viruses can infect desktop computers and network servers alike.
Some viruses are programmed to damage the computer by damaging programs, deleting files, or reformatting the hard disk. Others are not designed to do any damage, but simply to replicate themselves and make their presence known by presenting text, video, and audio messages. Even these benign viruses can create problems for the computer user. They typically take up computer memory used by legitimate programs. As a result, they often cause erratic behavior and can result in system crashes. In addition, many viruses are bug-ridden, and these bugs may lead to system crashes and data loss.
At the end of the list of PC Virus, Trojans and Worms is a list of the Five Types of Viruses. Symantec AntiVirus can detect and clean, from your PC, any Virus, Trojan or Worm on this list. This article is detailed in full at http://symantec.com/
Virus Threats starting with “D”
- D@fit
Hoax
- DA_Boys
Virus
- Dana virus hoax
Hoax
- Dark Avenger
Virus
- Dash-em
Virus
- Datalock
Virus
- Deadman.Sysman.gen
Virus
- Dear Friends Hoax
Hoax
- death69
Hoax
- DebPloit.Exploit
Trojan Horse
- DeepThroat.Trojan
Trojan Horse
- Deeyenda
Hoax
- Deicide.II.Brotherhood
Virus
- Delcmos.B
Virus
- Delta.1163
Virus
- Deltree Trojan
Trojan Horse
- Desi1love Hoax
Hoax
- Desperado
Virus
- Despite Virus Hoax
Hoax
10-15-1999
- Detecting network traffic that may be due to RPC worms
- Devil's Dance
Virus
- Diablo_Boot
Virus
- Dialer.7AdPower
Dialer
- Dialer.Aconti
Dialer
- Dialer.AdultBrowser
Dialer
- Dialer.Adultchat
Dialer
- Dialer.Adultchat
Dialer
- Dialer.AGB
Dialer
- Dialer.Antispy
Dialer
- Dialer.Asdplug
Dialer
- Dialer.AxFreeAccess
Dialer
- Dialer.BaciamiStupido
Dialer
- Dialer.Beweb
Dialer
- Dialer.CAPI-Anruf
Dialer
- Dialer.CarpeDiem
Dialer
- Dialer.Coder
Dialer
- Dialer.Comsoft
Dialer
- Dialer.Connect
Dialer
- Dialer.ConnectParty
Dialer
- Dialer.ConsulInfo
Dialer
- Dialer.Crosskirk
Dialer
- Dialer.Cyberbill
Dialer
- Dialer.Dapsol
Dialer
- Dialer.DateMake
Dialer
- Dialer.Dcon
Dialer
- Dialer.Desire
Dialer
- Dialer.DialNet
Dialer
- Dialer.Dialpass
Dialer
- Dialer.DialPlatform
Dialer
- Dialer.DialXS
Dialer
Dialer
- Dialer.DirectDialler
Dialer
- Dialer.Diver
Dialer
- Dialer.Edipole
Dialer
- Dialer.Eroskop
Dialer
- Dialer.Erostars
Dialer
- Dialer.EuroInfoMedia
Dialer
- Dialer.ExDialer
Dialer
- Dialer.Fite
Dialer
- Dialer.Flatfive
Dialer
- Dialer.Freeload
Dialer
- Dialer.GBDial
Dialer
- Dialer.Generic
Dialer
- Dialer.Girlshost
Dialer
- Dialer.GizliGercekler
Dialer
- Dialer.Global
Dialer
- Dialer.GlobalDialer
Dialer
- Dialer.GMsoft
Dialer
- Dialer.Goin
Dialer
- Dialer.Gola
Dialer
- Dialer.Greencard
Dialer
- Dialer.Gxbill
Dialer
- Dialer.HackerCD
Dialer
- Dialer.Haldex
Dialer
- Dialer.HeissSex
Dialer
- Dialer.Heysan
Dialer
- Dialer.Holistyc
Dialer
- Dialer.Hoterotik
Dialer
- Dialer.HotPleasure
Dialer
- Dialer.HotPleasure.B
Dialer
- Dialer.Hottarts
Dialer
- Dialer.HotVideo
Dialer
- Dialer.Hq
Dialer
- Dialer.ICcontrol
Dialer
- Dialer.iDialer
Dialer
- Dialer.IEDisco
Dialer
- Dialer.IEDisco.B
Dialer
- Dialer.Indiax
Dialer
- Dialer.Inproc
Dialer
- Dialer.Inproc.B
Dialer
- Dialer.InstantAccess
Dialer
- Dialer.Intexus
Dialer
- Dialer.Juicyteen
Dialer
- Dialer.Kotu
Dialer
- Dialer.LetToPhone
Dialer
- Dialer.LiquidInc
Dialer
- Dialer.LiveCams
Dialer
- Dialer.LiveVideo_fi
Dialer
- Dialer.Lohan
Dialer
- Dialer.Lovemenow
Dialer
- Dialer.LoveX
Dialer
- Dialer.Lusval
Dialer
- Dialer.Marcado
Dialer
- Dialer.MasterDialer
Dialer
- Dialer.Megateens
Dialer
- Dialer.Mejorbus
Dialer
- Dialer.MicroDialer
Dialer
- Dialer.Moneytree
Dialer
- Dialer.Montil
Dialer
- Dialer.Mostrar
Dialer
- Dialer.MovieFile
Dialer
- Dialer.Myworld
Dialer
- Dialer.NewDial
Dialer
- Dialer.NewDial.B
Dialer
- Dialer.Nunci
Dialer
- Dialer.OneOnOne
Dialer
- Dialer.Pagomaster
Dialer
- Dialer.Palazzo
Dialer
- Dialer.Paycenter
Dialer
- Dialer.Paydial
Dialer
- Dialer.Pecdialer
Dialer
- Dialer.PlayGames
Dialer
- Dialer.Pornosex
Dialer
- Dialer.Pornostar
Dialer
- Dialer.Pornpaq
Dialer
- Dialer.PornPaq.B
Dialer
-
- Dialer.Postbas
Dialer
- Dialer.Powerdial
Dialer
- Dialer.PremiumHTML
Dialer
- Dialer.Prime
Dialer
- Dialer.Prive
Dialer
- Dialer.QuestNet
Dialer
- Dialer.Rampage
Dialer
- Dialer.Rapidblaster
Dialer
- Dialer.Rapidspark
Dialer
- Dialer.RASDialer
Dialer
- Dialer.RasPro
Dialer
- Dialer.RatedXXX
Dialer
- Dialer.Saristar
Dialer
- Dialer.Sexcyberkey
Dialer
- Dialer.SexFiles
Dialer
- Dialer.Sexitaly
Dialer
- Dialer.SexPornoAdult
Dialer
- Dialer.Sexprovider
Dialer
- Dialer.Sfonditalia
Dialer
- Dialer.SouthBeachTel
Dialer
- Dialer.SPlanet
Dialer
- Dialer.Stardial
Dialer
- Dialer.StripPlayer
Dialer
- Dialer.Superzugang
Dialer
- Dialer.SweetGirls_gb
Dialer
- Dialer.SwitchDialer
Dialer
- Dialer.Switchdialer.B
Dialer
- Dialer.Target
Dialer
- Dialer.Teens
Dialer
- Dialer.Telebizz
Dialer
- Dialer.Tibs
Dialer
- Dialer.Trafficadvance
Dialer
- Dialer.Trojan
Trojan Horse
- Dialer.Tronyx
Dialer
- Dialer.UDIS
Dialer
- Dialer.UKAmPorn
Dialer
- Dialer.Ulubione
Dialer
- Dialer.Uyelik
Dialer
- Dialer.Vesta
Dialer
- Dialer.VividGal
Dialer
- Dialer.Volta
Dialer
- Dialer.Webcont
Dialer
- Dialer.WebDialler
Dialer
- Dialer.Webview
Dialer
- Dialer.WildJP
Dialer
- Dialer.Wingoon
Dialer
- Dialer.Winmuschi
Dialer
- Dialer.WorldContent
Dialer
- Dialer.WSV
Dialer
- Dialer.XAccess
Dialer
- Dialer.XDialer
Dialer
- Dialer.XLite
Dialer
- Dialer.Xpehbam
Dialer
- Dialer.XXXAction
Dialer
- Dialer.Yeaknet
Dialer
- DialupPwd
Other
- Digi.3547
Virus
- Digispid.B.Worm
Trojan Horse Worm
- Dik.1393.Int
Virus
- Dilo.667
Virus
- Discount Virus Hoax
Hoax
- Disk_Killer
Virus
- Dixie@mm
Virus Worm
- DMsetup.IRC.Worm
Trojan Horse Worm
- DoctorAdwarePro
Other
- Dolphin.594
Virus
- Domhuman
Virus
- DonaldD.Trojan
Trojan Horse
- DonaldD.Trojan.C
Trojan Horse
- DoS.Autocat
Trojan Horse
- Download.Adware
Adware
- Download.Trojan.B
Trojan Horse
- Downloader
Trojan Horse
- Downloader.Aduent
Trojan Horse
- Downloader.Aphe
Trojan Horse
- Downloader.Bancos
Trojan Horse
- Downloader.Bancos!gen
Trojan Horse
- Downloader.BBX
Trojan Horse
- Downloader.Berbew
Trojan Horse
- Downloader.Berbew.dam
Trojan Horse
- Downloader.BO
Trojan Horse
- Downloader.BO.B
Trojan Horse
- Downloader.BO.B.dr
Trojan Horse
- Downloader.BO.dr
Trojan Horse
- Downloader.Booli.A
Trojan Horse
- Downloader.Booli.B
Trojan Horse
- Downloader.Botten
Trojan Horse
- Downloader.Browsilla
Trojan Horse
- Downloader.CDT
Trojan Horse
- Downloader.Centim
Trojan Horse
- Downloader.Chamber
Trojan Horse
- Downloader.Chamber.Kit
Trojan Horse
- Downloader.Chekin
Trojan Horse
- Downloader.Cile
Trojan Horse
- Downloader.Dluca
Trojan Horse
- Downloader.Dluca.B
Trojan Horse
- Downloader.Dluca.C
Trojan Horse
- Downloader.Dluca.D
Trojan Horse
- Downloader.Dluca.E
Trojan Horse
- Downloader.Dowdec
Trojan Horse
- Downloader.Dowdec.B
Trojan Horse
- Downloader.Fidar
Trojan Horse
- Downloader.Fugif
Trojan Horse
- Downloader.Fullalc
Trojan Horse
- Downloader.Harnig
Trojan Horse
- Downloader.Inor
Trojan Horse
- Downloader.Inor.B
Trojan Horse
- Downloader.Inor.C
Trojan Horse
- Downloader.Ject
Trojan Horse
- Downloader.Ject.B
Trojan Horse
- Downloader.Ject.C
Trojan Horse
- Downloader.Looked
Trojan Horse
- Downloader.Lunii
Trojan Horse
- Downloader.Magicon
Trojan Horse
- Downloader.Mimail
Trojan Horse
- Downloader.Mimail.B
Trojan Horse
- Downloader.MSCache
Trojan Horse
- Downloader.PSK
Trojan Horse
- Downloader.Psyme
Trojan Horse
- Downloader.Realog
Trojan Horse
- Downloader.Reitrec
Trojan Horse
- Downloader.Revird
Trojan Horse
- Downloader.Slime
Trojan Horse
- Downloader.SmallWeb
Trojan Horse
- Downloader.SmallWeb.B
Trojan Horse
- Downloader.Sniper
Trojan Horse
- Downloader.Sumina
Trojan Horse
- Downloader.Swif
Trojan Horse
- Downloader.Swif.B
Trojan Horse
- Downloader.Tagdoor
Trojan Horse
- Downloader.Tooncom
Trojan Horse
Five recognized types of viruses
File infector viruses
File infector viruses infect program files. These viruses normally infect executable code, such as .com and .exe files. The can infect other files when an infected program is run from floppy, hard drive, or from the network. Many of these viruses are memory resident. After memory becomes infected, any noninfected executable that runs becomes infected. Examples of known file infector viruses include Jerusalem and Cascade.
Boot sector viruses
Boot sector viruses infect the system area of a disk; that is, the boot record on floppy disks and hard disks. All floppy disks and hard disks (including disks containing only data) contain a small program in the boot record that is run when the computer starts up. Boot sector viruses attach themselves to this part of the disk and activate when the user attempts to start up from the infected disk. These viruses are always memory resident in nature. Most were written for DOS, but, all PCs, regardless of the operating system, are potential targets of this type of virus. All that is required to become infected is to attempt to start up your computer with an infected floppy disk Thereafter, while the virus remains in memory, all floppy disks that are not write protected will become infected when the floppy disk is accessed. Examples of boot sector viruses are Form, Disk Killer, Michelangelo, and Stoned.
Master boot record viruses
Master boot record viruses are memory-resident viruses that infect disks in the same manner as boot sector viruses. The difference between these two virus types is where the viral code is located. Master boot record infectors normally save a legitimate copy of the master boot record in an different location. Windows NT computers that become infected by either boot sector viruses or master boot sector viruses will not boot. This is due to the difference in how the operating system accesses its boot information, as compared to Windows 98/Me. If your Windows NT systems is formatted with FAT partitions you can usually remove the virus by booting to DOS and using antivirus software. If the boot partition is NTFS, the system must be recovered by using the three Windows NT Setup disks. Examples of master boot record infectors are NYB, AntiExe, and Unashamed.
Multipartite viruses
Multipartite (also known as polypartite) viruses infect both boot records and program files. These are particularly difficult to repair. If the boot area is cleaned, but the files are not, the boot area will be reinfected. The same holds true for cleaning infected files. If the virus is not removed from the boot area, any files that you have cleaned will be reinfected. Examples of multipartite viruses include One_Half, Emperor, Anthrax and Tequilla.
Macro viruses
These types of viruses infect data files. They are the most common and have cost corporations the most money and time trying to repair. With the advent of Visual Basic in Microsoft's Office 97, a macro virus can be written that not only infects data files, but also can infect other files as well. Macro viruses infect Microsoft Office Word, Excel, PowerPoint and Access files. Newer strains are now turning up in other programs as well. All of these viruses use another program's internal programming language, which was created to allow users to automate certain tasks within that program. Because of the ease with which these viruses can be created, there are now thousands of them in circulation. Examples of macro viruses include W97M.Melissa, WM.NiceDay and W97M.Groov.
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Article Source: http://ColtonIndustries.org by Ted Jockey
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