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Microsoft Security Intelligence
Published Apr 09, 2012 | Updated Sep 15, 2017

TrojanDownloader:Java/Rexec.I

Detected by Microsoft Defender Antivirus

Aliases: EXP/JAVA.Ternub.Gen (Avira) Java/Exploit.CVE-2011-3544.BK trojan (ESET) Mal/JavaGen-E (Sophos) Trojan-Downloader.Java.Rexec (Ikarus) Trojan.Maljava (Symantec)

Summary

TrojanDownloader:Java/Rexec.I is the detection for Java-based trojans that are generated by the "Blackhole" exploit kit. TrojanDownloader:Java/Rexec.I may download and run other malware.

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 Java applications

This threat exploits a known vulnerability in Java. After removing this threat, make sure that you install the updates available from the vendor. You can read more about this vulnerability in Java, as well as where to download the software update from the following links:

It may be necessary to remove older versions of Java that are still present. Keeping old and unsupported versions of Java on your system presents a serious security risk. To read more about why you should remove older versions of Java, see the following information.

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