Worm:Win32/Hamweq.AB is a worm that spreads via removable drives, such as USB memory sticks. It contains an IRC-based backdoor, which may be used by a remote attacker to order the affected machine to participate in Distributed Denial of Service attacks, or to download and execute arbitrary files.

Microsoft security software detects and removes this threat.

This threat uses vulnerabilities in recent versions of Internet Explorer, Microsoft Silverlight, Adobe Flash Player, and Java to install malware on your PC.

To learn more about how this threat is being used by cybercriminals,

Read: Exploit kits remain a cybercrime staple against outdated software – 2016 threat landscape review series

Find out ways that malware can get on your PC.  

This software threat is detected and removed by the Malicious Software Removal Tool. For more information, see the parent variant.

Worm:Win32/Sohanad.AB is a member of Win32/Sohanad - a family of worms that may spread via removable or network drives and particular messenger applications. It may also modify a number of system settings to facilitate its actions on an affected computer, and contact a remote host.

Trojan:Win32/Alureon.gen!AB is the generic detection for a member of the Win32/Alureon family. It drops another malware, tries to delete the Hosts file, and tries to create a virtual file system (VFS). It may also connect to certain servers.

VirTool:Win32/DelfInject.gen!AB is a generic detection for malicious files that are obfuscated using particular techniques to protect them from detection or analysis.

TrojanDownloader:ASX/Wimad is a detection for malicious Windows media files that are used in order to encourage users to download and execute arbitrary files on an affected machine. When opened with Windows Media Player, these malicious files open a particular URL in a web browser. 

TrojanSpy:Win32/Ursnif.AB is a trojan that steals sensitive information from an affected machine.

This dynamic-link library (DLL) file is dropped by variants of Backdoor:Win32/Berbew. See the parent variant list for more information.

Trojan:Win64/Sirefef.AB is a component of the Sirefef multi-platform rootkit, related to Win32/Sirefef. Sirefef is multi-component malware family that modifies search results when you search for something on the Internet and generates pay-per-click advertising revenue for its controllers. This particular component clicks on links supplied by a remote attacker to generate revenue.

VirTool:Win32/VBInject.gen!AB is a generic detection for malicious files that are obfuscated using particular techniques to protect them from detection or analysis.

TrojanDownloader:Java/OpenConnection.AB is a trojan Java applet that could allow the downloading and execution of arbitrary malicious files.

Win32/Mydoom.AB@mm is a mass-mailing worm that sends itself to e-mail addresses it finds on the infected computer.

Windows Defender detects and removes this threat.

This threat is part of the Win32/Banload family. Trojans in this family can download other malware onto your PC, including Win32/Banker and Win32/Bancos.

They can also steal your banking user names and passwords and send them to a remote attacker.

Find out ways that malware can get on your PC.

Windows Defender detects and removes this threat.

Trojan:DOS/Alureon.AB is a part of Win32/Alureon - a family of data-stealing malware. Alureon steals confidential information from your computer, such as user names, passwords, and credit card data. Win32/Alureon may also allow an attacker to transmit malicious data to your computer.

This particular variant infects the Master Boot Record (MBR).

Microsoft Defender Antivirus detects and removes this threat.

This threat downloads and installs other programs, including other malware, onto your PC without your consent.

Find out ways that malware can get on your PC.