Variants in the Trojan-Downloader:Java/Openstream family are Java applet-based programs that when executed will download and install additional files onto the system.
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Openstream variants typically arrive in a Java JAR file, which the user may need to install and execute before it can perform its silent downloading routine. For a representative example of an Openstream malware, please see the Openstream.T description.
Openstream variants may also be silently installed on the system if the system has a Java installation with a known, unpatched vulnerability that may be exploited. For more information about Java exploits, please see:
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Check the user guide for instructions.
Submit a Sample
Submit a file or URL for analysis.