Trojan:JS/Blacole.gen

Classification

Trojan.js.blacole.gen

Summary

The detection 'Trojan.js.blacole.gen' identifies scripts (hosted on compromised websites) that are injected with malicious code. The affected scripts redirect visitors to a fake site that silently downloads malware onto the machine.

Removal

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.

Technical Details

The detection 'Trojan.js.blacole.gen' identifies JavaScript code hosted on websites that have been compromised with additional code.

The affected script redirects visitors to a malicious site that prompts them to download a file, purportedly Adobe Flash player, to "display all contents correctly". The site looks similar to the image below:

On clicking the 'Download Now' button, a file named flashplayer.exe is downloaded from a SkyDrive account.

If the downloaded flashplayer.exe file is executed, the following screen is displayed:

Meanwhile in the background, the file contacts the same SkyDrive to silently download additional malware.

For more information, see: