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Microsoft Security Intelligence
Published Sep 15, 2011 | Updated Sep 15, 2017

TrojanDownloader:Java/OpenConnection.OU

Detected by Microsoft Defender Antivirus

Aliases: No associated aliases

Summary

TrojanDownloader:Java/OpenConnection.OU is an obfuscated Java class applet trojan that attempts to download and execute arbitrary files from remote servers.

To detect and remove this threat and other malicious software that may be installed on your computer, run a full-system scan with an appropriate, up-to-date, security solution. The following Microsoft products detect and remove this threat:

For more information on antivirus software, see http://www.microsoft.com/windows/antivirus-partners/.

Update vulnerable applications

This threat may exploit a known vulnerability in the Java Runtime Environment (JRE). To prevent your computer from being vulnerable to this malware, make sure that you install the updates available from the vendor. You can read more about this vulnerability from the following links:

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