Did you just run into a download or a file on your computer that is digitally signed by SquareTrace? Some of the security products refers to the detected files as Adware.SwiftBrowse.CH and W64/A-59c9c70a!Eldorado. The detection rate for the SquareTrace files collected here is 52%. Please read on for more details.
You'll typically notice SquareTrace when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the SquareTrace certificate with the following procedure:
Here's a screenshot of a file that has been signed by SquareTrace:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by SquareTrace 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, etc. You can also examine the address for SquareTrace, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the SquareTrace certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the SquareTrace files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 25/55 | {b8f599f0-54af-4036-a91b-632c9b073421}gw64.sys |
| 31/52 | {7d7117dc-d64f-4796-8b7b-6a8f75fdd7d2}gw64.sys |
Here is the detection names for the SquareTrace files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.SwiftBrowse.CH |
| AVG | AdPlugin.DAI |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Adware.SwiftBrowse.CH |
| AegisLab | Adware.BrowseFox |
| Agnitum | Riskware.Agent! |
| Antiy-AVL | GrayWare[NetTool:not-a-virus]/Win64.NetFilter.a |
| Arcabit | Adware.SwiftBrowse.CH |
| Avast | Win32:BrowseFox-MN [PUP] |
| Avira | ADWARE/BrowseFox.drc |
| BitDefender | Adware.SwiftBrowse.CH |
| Bkav | W64.HfsAdware.2053 |
| ClamAV | Win.Adware.Swiftbrowse-497 |
| Cyren | W64/A-59c9c70a!Eldorado |
| DrWeb | Tool.NetFilter.313, Trojan.Yontoo.1808 |
| ESET-NOD32 | a variant of Win64/NetFilter.A potentially unsafe |
| Emsisoft | Adware.SwiftBrowse.CH (B) |
| F-Prot | W64/A-59c9c70a!Eldorado |
| F-Secure | Adware.SwiftBrowse.CH |
| Fortinet | Adware/NetFilter |
| GData | Adware.SwiftBrowse.CH |
| Ikarus | PUA.BrowseFox |
| K7AntiVirus | Adware ( 0040f9f21 ) |
| K7GW | Adware ( 0040f9f21 ) |
| Kaspersky | not-a-virus:NetTool.Win64.NetFilter.k |
| Malwarebytes | PUP.Optional.BrowseFox |
| McAfee-GW-Edition | BehavesLike.Win64.PUPAmonetize.ph |
| MicroWorld-eScan | Adware.SwiftBrowse.CH |
| SUPERAntiSpyware | Adware.SwiftBrowse/Variant |
| TrendMicro | HS_BROWSEFOX.SM, PUA_BROWSEFOX |
| TrendMicro-HouseCall | HS_BROWSEFOX.SM, PUA_BROWSEFOX |
| VIPRE | Trojan.Win32.Generic!BT |
| Zillya | Adware.Yotoon.Win64.14 |
| nProtect | Adware.SwiftBrowse.CH, Trojan-Clicker/W32.Yotoon.48784 |
The detection percentage is based on the fact that I've gathered 107 scan reports for the SquareTrace files. 56 of these scan reports came up with some sort of detection. You can view the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: