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Published Sep 12, 2007 | Updated Sep 15, 2017

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Trojan:Win32/Perfcoo.A

Detected by Microsoft Defender Antivirus

Aliases: Trojan.Win32.Agent.ali (Kaspersky) Generic.dx (McAfee) Trojan:Win32/Small!2233 (Microsoft) W32/Agent.BXRV (Norman) Troj/Agent-GAM (Sophos) Trojan.Win32.Agent.ali (Sunbelt Software) Trojan.Perfcoo (Symantec) TROJ_AGENT.XTS (Trend Micro)

Summary

Trojan:Win32/Perfcoo.A is a small Trojan downloader. Trojan:Win32/Perfcoo.A may contact a remote Web site and execute a server-side script. This Trojan may be installed or downloaded by other pre-existing Trojans or unwanted software on the infected computer.

Trojan:Win32/Perfcoo.A may download and install additional malicious software, thus manual removal is not recommended. To detect and remove this Trojan 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, visit http://www.microsoft.com/athome/security/downloads/default.mspx

Trojan:Win32/Perfcoo.A

Summary

What to do now

Technical information

Threat behavior

Prevention

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