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Win32/Hackdef Summary Technical information Microsoft recommends that you download the latest definitions to get protected. Win32/Hackdef is a family of backdoor Trojans that is distributed in various ways to computers running certain versions of Microsoft Windows. This Trojan is a user-mode rootkit. It creates, alters, and hides Windows system resources on a computer that it has infected, and can hide proxy services and backdoor functionality. It can also conceal use of TCP and UDP ports for receiving commands from attackers. What to do now To detect and remove this threat and other malicious software that may be installed in your computer, run a full-system scan with an up-to-date antivirus product such as the following:   Microsoft Security Essentials Microsoft Safety Scanner Microsoft Windows Malicious Software Removal Tool   For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/. Top

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Severity: Severe

This entry was first published on: Mar 28, 2005
This entry was updated on: Apr 17, 2011

This threat is also detected as:
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