Backdoor:Win32/Sdbot.SO is a member of Win32/Sdbot - a large family of IRC-controlled backdoors that allow unauthorized access and control of an affected computer. Using this backdoor, an attacker can perform a large number of different actions on an affected computer, including downloading and executing arbitrary files, stealing sensitive information and spreading to other computers using various methods.

Worm:Win32/Mytob.RQ is a member of Win32/Mytob - a family of worms that spreads in a variety of ways. The worm can spread by exploiting several known Windows vulnerabilities, via fixed or removable drives, or by sending a copy of itself via email, Windows Live Messenger, or Windows Messenger.

Worm:Win32/Prolaco.C is a worm that spreads via e-mail, removable drives and Peer-to-Peer file sharing networks. This worm also lowers security settings and installs Win32/Vundo.

Win32/Vundo is a multiple-component family of programs that deliver 'out of context' pop-up advertisements. They may also download and execute arbitrary files.

Worm:Win32/Prolaco.gen!C is a worm that spreads via e-mail, removable drives and Peer-to-Peer file sharing networks. This worm also lowers security settings and installs Win32/Vundo.

Win32/Vundo is a multiple-component family of programs that deliver 'out of context' pop-up advertisements. They may also download and execute arbitrary files.

Worm:Win32/Mytob.SC is a member of Win32/Mytob - a family of worms that spreads in a variety of ways. The worm can spread by exploiting several known Windows vulnerabilities, via fixed or removable drives, or by sending a copy of itself via email, Windows Live Messenger, or Windows Messenger.

Worm:Win32/Mytob.RW is a member of Win32/Mytob - a family of worms that spreads in a variety of ways. The worm can spread by exploiting several known Windows vulnerabilities, via fixed or removable drives, or by sending a copy of itself via email, Windows Live Messenger, or Windows Messenger.

Worm:Win32/Pushbot.KX is a worm that may spread via MSN Messenger and/or AIM. The worm also contains backdoor functionality that allows unauthorized access to an affected machine. This worm does not spread automatically upon installation, but must be ordered to spread by a remote attacker.

Worm:Win32/Yoybot.gen is a generic detection for a family of malicious IRC bots that are able to spread through removable drives and file sharing networks.

Worm:Win32/Prolaco.BC is a detection for a variant of Win32/Prolaco, a worm that spreads via e-mail message attachments, remote drives, removable drives and shared folders of Peer 2 Peer (P2P) applications. This worm also lowers security settings and downloads and installs Win32/Vundo.

Trojan:Win32/Horst.gen!C is a peer-to-peer file sharing component of the multiple-component Win32/Horst family. Files detected by this signature may be used to establish a peer-to-peer connection with other infected systems via the eDonkey/eMule P2P file sharing networks. This connection can then be used to download and execute files from, or distribute them to, the other affected systems. It may also be used to attempt to spread other Horst components to eDonkey/eMule users. Many of the components distributed by Horst are associated with sending spam.

Worm:Win32/Prolaco.A@mm is a worm that attempts to spread via email and peer-to-peer file sharing. It may arrive as an email exploiting the Christmas holiday, and posing as a promotional message from several known brand names.