Trojan-Downloader:W32/Small.HSG downloads and runs a file that is detected as Trojan-Downloader.Win32.Agent.HQL. This normally arrives as a dropped file by other malware or is downloaded unsuspectingly by the user from a malicious website.


Automatic action

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.

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Technical Details

Once running on the system, this trojan will download a file from the following website:


The downloaded file will then be stored as:

  • %Windows%\17PHolmes2000150.exe

It will be automatically executed from the infected machine without the users knowledge and will create a registry entry that will reference to the aforementioned location. This in turn will download and execute another trojan and will further compromise system security.

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