Did you just run into a download or a file on your computer that is digitally signed by Square Network Tech Co.,LTD.? Some of the security products refers to the detected files as a variant of Win32/SquareNet.A and Adware.Agent.OBH. The detection rate for the Square Network Tech Co.,LTD. files collected here is 12%. Please read on for more details.
You will typically notice Square Network Tech Co.,LTD. 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 the digital signature details for Square Network Tech Co.,LTD. with the following steps:
Here is a screenshot of a file signed by Square Network Tech Co.,LTD.:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by Square Network Tech Co.,LTD. and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can view 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 Square Network Tech Co.,LTD., such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Square Network Tech Co.,LTD. certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Square Network Tech Co.,LTD. files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/53 | vmhost.exe |
| 4/53 | sv.exe |
| 1/44 | mediadev.exe |
| 1/50 | UpdaterService.exe |
| 20/53 | vlc_installer.exe |
| 12/52 | UpdaterService.exe |
| 3/51 | UpdaterService.exe |
| 7/51 | vmhost.exe |
| 14/53 | java_installer.exe |
| 3/50 | UpdaterService.exe |
| 0/50 | UpdaterService.exe |
Here's the detection names for the Square Network Tech Co.,LTD. files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.D03, BundleApp_r.N |
| AVware | TrackCash (fs) |
| Ad-Aware | Application.Bundler.E, Adware.Agent.OBH |
| Agnitum | Riskware.Agent! |
| AhnLab-V3 | Adware/Win32.Clicker, Downloader/Win32.AdCenter |
| Avast | Win32:Adware-gen [Adw], Win32:Malware-gen |
| BitDefender | Application.Bundler.E, Adware.Agent.OBH |
| DrWeb | Adware.Conduit.47, Adware.Downware.3460, Adware.Downware.3771, Trojan.Starter.3342 |
| ESET-NOD32 | a variant of Win32/SquareNet.A, Win32/SquareNet.B |
| Emsisoft | Adware.Agent.OBH (B) |
| F-Secure | Application.Bundler.E, Adware.Agent.OBH |
| Fortinet | Riskware/SquareNet |
| GData | Application.Bundler.E, Adware.Agent.OBH, Win32.Application.Bundler.A |
| Ikarus | PUA.SquareNet |
| K7AntiVirus | Unwanted-Program ( 0040f8d11 ) |
| K7GW | Unwanted-Program ( 0040f8d11 ) |
| Malwarebytes | PUP.Optional.SquareNetwork.A, PUP.Optional.UpdateService.A, PUP.Optional.SquareNet.A, PUP.Optional.SquareNet |
| McAfee | Artemis!CB41547BB743, PUP-FAU |
| McAfee-GW-Edition | Artemis!CB41547BB743, PUP-FAU |
| MicroWorld-eScan | Application.Bundler.E, Adware.Agent.OBH |
| NANO-Antivirus | Riskware.Win32.Downware.dbxkww |
| Panda | Trj/Genetic.gen |
| Sophos | Square Network Installer |
| VIPRE | TrackCash (fs), Trojan.Win32.Generic!BT |
| nProtect | Adware.Agent.OBH |
The detection percentage is based on that I've gathered 560 scan reports for the Square Network Tech Co.,LTD. files. 66 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: