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TrojanClicker:Win32/Zirit.Y
Detected by Microsoft Defender Antivirus
Aliases: Trojan-Downloader.Win32.Agent.qpc (Kaspersky) Trojan-Downloader.Win32.Agent.qez (Kaspersky) Trojan-Downloader.Win32.Agent.qxp (Kaspersky) Trojan.Adclicker (Symantec) Generic Downloader.p (McAfee)
Summary
TrojanClicker:Win32/Zirit.Y is a generic detection for several variants of a trojan EXE file, which repeatedly visits a specific website, presumably to collect per-click payments. It may also display pop-ups.
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 the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742). For more information, see http://www.microsoft.com/protect/computer/viruses/vista.mspx.