Did you just run into a download or a file on your computer that has a digital signature from Xiaodong Wang? Some of the security products refers to the detected files as virus.win32.sality.at and PUP/Winzipper. The detection rate for the Xiaodong Wang files collected here is 21%. Please read on for more details.
You will probably notice Xiaodong Wang when 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 also view the Xiaodong Wang certificate with the following procedure:
Here is a screencap of a file digitally signed by Xiaodong Wang:

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 Xiaodong Wang 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, etc. You can also see the address for Xiaodong Wang, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the Xiaodong Wang certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screengrab above.
The following are the Xiaodong Wang files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 3/58 | InterHop.exe |
| 12/57 | interhop.exe |
| 21/56 | InterHop.exe |
Here is the detection names for the Xiaodong Wang files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.471 |
| AVware | Trojan.Win32.Generic!BT |
| AegisLab | Adwareare.Mutabaha.Otvrg!c |
| AhnLab-V3 | Adware/Win32.Agent.N2107621748 |
| Avast | Win32:Dropper-gen [Drp] |
| Avira | ADWARE/Mutabaha.pzwbt, ADWARE/Mutabaha.otvrg |
| CAT-QuickHeal | BrowserModifier.SupTab |
| CrowdStrike | malicious_confidence_73% (D), malicious_confidence_65% (D), malicious_confidence_66% (D) |
| DrWeb | Adware.Mutabaha.2034, Adware.Mutabaha.2079, Adware.Mutabaha.2111 |
| GData | Win32.Trojan.Agent.IIW3GP |
| Ikarus | BHO.Win32.SupTab |
| Invincea | virus.win32.sality.at |
| K7AntiVirus | Riskware ( 0040eff71 ) |
| K7GW | Riskware ( 0040eff71 ) |
| Kaspersky | not-a-virus:AdWare.Win32.Agent.kcrq |
| McAfee | Artemis!B31A7B5E6B4C, Artemis!659A14AD4D52 |
| McAfee-GW-Edition | Artemis |
| Microsoft | BrowserModifier:Win32/SupTab |
| Panda | PUP/Winzipper |
| Sophos | Generic PUA IC (PUA), Generic PUA NH (PUA) |
| Symantec | Heur.AdvML.C, Trojan.Gen.2 |
| VIPRE | Trojan.Win32.Generic!BT |
| ViRobot | Trojan.Win32.Z.Suptab.409320[h] |
The detection percentage is based on that I have collected 171 scan results for the Xiaodong Wang files. 36 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.
The analysis is based on certificates with the following serial numbers: