List of computer worms

Name	Alias(es)	Type	Subtype	Isolation date	Isolation	Origin	Author	Notes
Badtrans			Mass mailer	November 24, 2001				Installed a keylogger; distributed logged information
Bagle	Beagle, Mitglieder, Lodeight			January 18, 2004	Mass mailer
Blaster	Lovesan			August 11, 2003	Gruel.exe Makes all exe's unusable so the computer probably can't reboot	Hopkins, Minnesota	Jeffrey Lee Parson	Targeted toward Bill Gates; contained message "billy gates why do you make this possible ? Stop making money and fix your software!!"
Brontok	W32/Rontokbro.gen@MM, W32.Rontokbro@mm, BackDoor.Generic.1138, W32/Korbo-B, Worm/Brontok.a, Win32.Brontok.A@mm, Worm.Mytob.GH, W32/Brontok.C.worm, and Win32/Brontok.E, W32.Rontokbro.D@mm.			October 3, 2005		Indonesia		Spread through an Indonesian e-mail headed with "stop the collapse in this country"; destroys firewalls
BuluBebek	W32/VBWorm.QXE			October 10, 2008
Code Red		DoS payload, Defacement payload		July, 2001				Exploited Microsoft Internet Information Services to deface web pages and DOS a few set IPs.
Daprosy Worm	Worm.Win32.VB.arz, W32.Autorun.worm.h, W32/Autorun-AMS, Worm:Win32/Autorun.UD	Trojan worm	Mass mailer	July 15, 2009				Replaces folders with .EXE's, key logger, slow mass mailer
Code Red II				August 4, 2001				Exploited Microsoft Internet Information Server security holes.
Dabber	W32/Dabber-C, W32/Dabber.A			May 14, 2004
Doomjuice				Feb 11, 2004				Attack computers that had previously been infected by the Mydoom worm.
ExploreZip	I-Worm.ZippedFiles			June 6, 1999				Spread through zipped documents in a spam e-mail.
Father Christmas	HI.COM			December 1988
Hybris	Snow White, Full Moon, Vecna.22528			December 11, 2000		Brazil	Vecna	Spread through an e-mail from "[email protected]"
ILOVEYOU	Loveletter, LoveBug			May 4, 2000		Manila, Philippines
Kak worm				October 22, 1999				On the first day of any month, if the time was after 5pm, Kak displayed a popup message box that read: "Driver Memory Error - Kagou-Anti-Kro$oft says not today !" Dismissing it would reboot the computer and then display the message again.
Klez				October 2001
Koobface				December 2008				Targeted MySpace and Facebook users with a heading of "Happy Holidays"
Melissa	Simpsons, Kwyjibo, Kwejeebo			March 26, 1999			David L. Smith	Not originally intended as harmful, but crashed servers by flooding them with e-mail
Morris				November 2, 1988			Robert Tappan Morris	Widely considered to be the first computer worm. Although created for academic purposes, the negligence of the author unintentionally caused the worm to act as a denial of service attack. It spread by exploiting known vulnerabilities in UNIX-based systems, cracked weak passwords, and periodically altered its process ID to avoid detection by system operators.
Mydoom	W32.MyDoom@mm, Novarg, Mimail.R, Shimgapi			January 26, 2004				Fastest-spreading e-mail worm known; used to attack SCO Group.
Mylife	W32.MyLife.C@mm			April 2, 2002
Navidad
Netsky				February 18, 2004		Germany	Sven Jaschan
Nimda				September 2001				Originally suspected to be connected to Al Qaeda because of release date; uses multiple infection vectors
Sadmind				May 8, 2001
Sasser	Big One			April 30, 2004			Sven Jaschan	Network worm. At startup, it kills the process lsass.exe, a windows process which handles file permissions. Killing lsass causes the computer to reboot one minute later, which would cause sasser to run again. This would continue in an infinite loop until the computer is shut down manually.
Sircam								Spread through e-mail with text like "I send you this file in order to have your advice."
Sober	CME-681, WORM_SOBER.AG			October 24, 2003		Germany, possibly from National Democratic Party of Germany		Was disguised as e-mail from United States government.
Sobig
SQL Slammer	DDOS.SQLP1434.A, the Sapphire Worm, SQL_HEL, W32/SQLSlammer							Caused global Internet slowdown
Stuxnet	Win32/Stuxnet			June 2010				First malware to attack SCADA systems.
Swen
Supernova Worm	Supova, Hello Kitty			July 10, 2002				Posed as files relating to video games Quake and Grand Theft Auto; attacked Christian websites
Upering	Annoyer.B, Sany			July 22, 2003
W32.Alcra.F	Win32/Alcan.I	Worm		February 17, 2006				Propagated through file-share networks.[1]
W32/Bolgimo.worm
W32/IRCbot.worm	W32/Checkout, W32.Mubla, W32/IRCBot-WB, and Backdoor.Win32.IRCBot.aaq	Trojan Worm	Backdoor	June 1, 2007				It provides a backdoor server and allows a remote intruder to gain access and control over the computer via an IRC channel.
WANK	OILZ			October 1989				Spread a pacifist, anti-nuclear political message
Welchia	Nachia							A helpful worm meant to install security patches and removes Blaster worm if the computer is infected by it.
Witty				March 19, 2004				Appeared very rapidly after announcement of Internet Security Systems vulnerability
Zotob							Farid Essebar and Atilla Ekici

See also

• Timeline of notable computer viruses and worms
• Comparison of computer viruses
• List of trojan horses

References

1. "W32.Alcra.F". Symantec. Retrieved 20 October 2016.