The following system changes may indicate the presence of this malware:
The presence of the following files:
TrojanDownloader:Java/OpenConnection.OS is a Java applet trojan that may allow the downloading and execution of arbitrary malicious files.
What to do now
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:
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: