Summary
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.
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
Once running on the system, this trojan will download a file from the following website:
- http://ymq.a2000150.wrs.mcboo.com/[Removed]
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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