Win32/Netsky.U@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself to e-mail addresses that it finds on the infected computer. The worm is activated when a user opens the attachment that contains the worm. The worm also contains a backdoor and performs denial of service (DoS) attacks against certain Web sites.

Win32/Netsky.V@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. It may target computers that are not patched with Microsoft Security Bulletin MS99-032 or MS03-040. The worm sends itself to e-mail addresses that it finds on the infected computer. Unlike earlier Netsky variants, this variant sends only a URL to target computers. When a user clicks the link, the target computer downloads the file and runs it. The worm also contains a backdoor component and performs denial of service (DoS) attacks against certain Web sites.

Win32/Mydoom.Y@mm is a mass-mailing worm that sends itself to e-mail addresses it finds on the infected machine. The worm also downloads and runs an executable that acts as a backdoor. It is a minor variant of Win32/Mydoom.X@mm

Win32/Mydoom.Z@mm is a mass-mailing worm that sends itself to e-mail addresses it finds on the infected computer. The worm also installs a .dll file that acts as a backdoor.

Win32/Netsky.W@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself to e-mail addresses that it finds on the infected computer. The worm is activated when a user opens the attachment that contains the worm.

Win32/Netsky.X@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself to e-mail addresses that it finds on the infected computer. The worm is activated when a user opens the attachment that contains the worm. The worm also contains a backdoor and performs denial of service (DoS) attacks against certain Web sites.

Win32/Bagle.AI@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses that it finds on the infected computer. It also spreads through file-sharing networks. The worm opens a backdoor and monitors a TCP port for instructions from remote attackers.

W32.Mimail.C@mm is a mass-mailing worm that targets certain versions of Microsoft Windows that do not have Microsoft Security Updates MS02-015 and MS03-014 installed. The worm sends itself as an attachment to e-mail addresses that it finds on the infected computer. The worm is activated when the recipient opens the attachment.

Win32/Netsky.Y@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself to e-mail addresses that it finds on the infected computer. The worm is activated when a user opens the attachment that contains the worm. The worm also contains a backdoor and performs denial of service (DoS) attacks against certain Web sites.

Win32/Bagle.AH@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses that it finds on the infected computer. It also spreads through file-sharing networks. The worm opens a backdoor and monitors a TCP port for instructions from remote attackers.

W32.Mimail.F@mm is a mass-mailing worm that targets certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses on an infected computer. The worm is activated when the user opens the attachment. The worm also launches denial of service (DoS) attacks against certain Web sites.

W32.Mimail.E@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses that it finds on an infected computer. The worm is activated when the user opens the attachment. The worm also launches denial of service (DoS) attacks against certain Web sites.

W32.Mimail.A@mm is a mass-mailing worm that targets several versions of Microsoft Windows that do not have Microsoft Security Bulletins MS02-015 and MS03-014 installed. The worm sends itself as an attachment to e-mail addresses on the infected computer. The worm is activated when the recipient opens the attachment.

This software threat is detected by the Microsoft antivirus engine. Technical details are not currently available for this threat.

This software threat is detected by the Microsoft antivirus engine. Technical details are not currently available for this threat.

Win32/Bagle.AC@mm is a mass-mailing worm that targets certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses that it finds on the infected computer. The worm is activated when the user opens the attachment. The worm monitors a random TCP port for instructions from remote attackers.

Win32/Bagle.AY@mm is a mass-mailing worm that targets certain versions of Microsoft Windows. The worm sends itself as an attachment to e-mail addresses that it finds on the infected computer. The worm is activated when a user opens the attachment. The worm monitors a random TCP port for instructions from remote attackers.

Win32/Bagle.BH@mm is a mass-mailing worm that targets certain versions of Microsoft Windows. The worm obtains e-mail addresses from certain Web sites and sends TrojanProxy:Win32/Mitglieder.CL as an e-mail attachment to those addresses.

Win32/Mytob.AH@mm is a mass-mailing worm that targets computers running certain versions of Microsoft Windows. The worm sends a copy of itself as an attachment to e-mail addresses that it gathers from the infected computer and from Web site queries. The worm also spreads by exploiting the DCOM RPC vulnerability that is described in Microsoft Security Bulletin MS03-026. Win32/Mytob.AH@mm has a backdoor component that connects to an IRC server to receive commands from attackers.

Win32/Mytob.AA@mm is a mass-mailing network worm that targets computers running certain versions of Windows. The worm can spread through e-mail, network shares, MSN Messenger, and Windows Messenger. It can also spread by exploiting the Windows vulnerabilities described in Microsoft Security Bulletins MS04-011 and MS03-026. The worm has a backdoor component that connects to an IRC server to receive commands from attackers.