Published Nov 15, 2005 | Updated Apr 16, 2011


High |Detected with Windows Defender Antivirus

Aliases: No associated aliases


WinNT/F4IRootkit is a kernel-mode rootkit used for copy protection on certain Sony BMG audio CDs. There are several versions of this rootkit. The rootkit hides certain Windows system resources, including files, processes, and registry settings. The rootkit can be used by attackers to hide malicious content on the computer.
Manual removal is not recommended for this threat. Use the Microsoft Malicious Software Removal Tool, Microsoft Security Essentials, Microsoft Safety Scanner, or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see
Follow us