Threat Descriptons



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Trojan-Downloader:W32/Agent.BUV downloads malicious files from a remote server. It then executes and installs the downloaded files.


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

Upon execution, this malware creates a copy of itself at the following location:

  • %windir%\system\internat.exe

It then creates a BAT file that will be used to delete the original file executed by user. It will then create the following processes:

  • %windir%\system\internat.exe
  • %programfiles%\Internet Explorer\IEXPLORE.EXE

The file called internat.exe is the malware's own process. It attempts to download additional files from the following URLs:


Note: The URLs were offline during our period of investigation.

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