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Microsoft Security Intelligence
Published Mar 11, 2010 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: Trojan.Win32.Cosmu.ons (Kaspersky) BackDoor-EMN (McAfee)


Trojan:Win32/Wisp.A steals sensitive information from the compromised computer, and allows an attacker to gain unauthorized access to the system in order to perform additional malicious actions, including downloading and executing arbitrary files. This trojan is installed by Trojan:Win32/Wisp.B
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
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