Quick Downloader - 18% Detection Rate *

Did you just find a download or a file on your computer that has a digital signature from Quick Downloader? Some of the security products refers to the detected files as Unwanted-Program ( 004ae64d1 ) and InstallCore (fs). The detection rate for the Quick Downloader files collected here is 18%. Please read on for more details.

You will probably see Quick Downloader when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Quick Downloader certificate with the following procedure:

1. Open up Windows Explorer and locate the Quick Downloader file
2. Right-click on the file and select Properties
3. Click on the Digital Signatures tab
4. Click on the View Certificate button

Here is a screenshot of a file that has been signed by Quick Downloader:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by Quick Downloader and that the file has not been tampered with.

If you click the View Certificate button shown in the screenshot above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also examine the address for Quick Downloader, such as the street name, city and country.

COMODO Code Signing CA 2 has issued the Quick Downloader certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.

Quick Downloader Files

These are the Quick Downloader files I have gathered, thanks to the FreeFixer users.

Scanner and Detection Names

Here's the detection names for the Quick Downloader files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.

* How the Detection Percentage is Calculated

The detection percentage is based on that I've collected 105 scan reports for the Quick Downloader files. 19 of these scan results came up with some sort of detection. If you like, you can view the full details of the scan results by examining the files listed above.

Analysis Details

The analysis is done on certificates with the following serial numbers:

• 00886e74060345a7d9dd833c2adf305e49
• 0087ce63c7728e982eca2980dca8dde091

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