Published Jun 11, 2010 | Updated Sep 15, 2017

Trojan:Win32/Koobface.B

Severe |Detected with Windows Defender Antivirus

Aliases: Win-Trojan/Qhost.2048 (AhnLab) Win32/QHosts.FI (CA) Trojan.Hosts.301 (Dr.Web) Win32/Qhost.NRK (ESET) Trojan.Win32.Qhost.mlv (Kaspersky) W32/Koobface.ID.worm (Panda) W32/Atraps.AAZL (Norman) Troj/Koobhost-A (Sophos) Trojan.SpamThru (Symantec) TROJ_QHOST.WA (Trend Micro)

Summary

Trojan:Win32/Koobface.B is a trojan component of Win32/Koobface that replaces the local hosts file.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see http://www.microsoft.com/security/antivirus/av.aspx.
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