Did you just run into a download or a file on your computer that has been digitally signed by Yanling Sun? Some of the security products refers to the detected files as Adware.Xadupi.B and Adware.Agent.RUE. The detection rate for the Yanling Sun files collected here is 9%. Please read on for more details.
You will typically see Yanling Sun when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Yanling Sun certificate with the following steps:
Here is a screengrab of a file digitally signed by Yanling Sun:

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 Yanling Sun and that no one has tampered with the file.
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 see the address for Yanling Sun, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the Yanling Sun certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Yanling Sun files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 4/57 | qkseesvc.exe |
| 2/57 | qkseeSvc.exe |
| 13/55 | qkseeSvc.exe |
| 2/57 | picx.exe |
| 2/56 | _@CE05.tmp |
| 4/57 | qks.exe |
| 6/55 | qksee_setup.3.1.4.1.exe |
| 1/56 | _@CDF4.tmp |
| 5/57 | qkseesvc.exe |
| 20/52 | qks.exe |
| 12/55 | qks.exe |
| 0/57 | qkdup.exe |
Here's the detection names for the Yanling Sun files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.Xadupi.B |
| AVG | Elex.AAN |
| Ad-Aware | Adware.Xadupi.B, Adware.Agent.RUE |
| AegisLab | Sape.Heur.B6022!c, Elex.Aan.Gen!c |
| AhnLab-V3 | PUP/Win32.Elex.R184326 |
| Antiy-AVL | RiskWare[Downloader:not-a-virus,HEUR]/Win32.Elex, Trojan/Win32.TSGeneric |
| Arcabit | Adware.Xadupi.B, Adware.Agent.RUE |
| BitDefender | Adware.Xadupi.B, Adware.Agent.RUE |
| Bkav | W32.HfsAdware.74FC |
| Comodo | Application.Win32.ELEX.DAQ, Application.Win32.ELEX.FB |
| Cyren | W32/Adware.RTQP-0962 |
| DrWeb | Adware.Mutabaha.1083, Adware.Mutabaha.1120, Adware.Mutabaha.1422 |
| ESET-NOD32 | a variant of Win32/ELEX.HL potentially unwanted, a variant of Win32/ELEX.GD potentially unwanted, a variant of Win32/ELEX.HE potentially unwanted, a variant of Win32/ELEX.IE potentially unwanted |
| Emsisoft | Adware.Xadupi.B (B), Adware.Agent.RUE (B) |
| F-Secure | Adware.Xadupi.B, Adware.Agent.RUE |
| Fortinet | Riskware/Elex |
| GData | Adware.Xadupi.B, Adware.Agent.RUE |
| Ikarus | PUA.AddLyrics, PUA.Elex |
| K7AntiVirus | Adware ( 004d81131 ), Adware ( 004dd9671 ), Adware ( 004f1d301 ) |
| K7GW | Adware ( 004d81131 ), Adware ( 004dd9671 ), Adware ( 004f1d301 ) |
| McAfee | Artemis!17F1A16B3D55 |
| McAfee-GW-Edition | Artemis!PUP |
| MicroWorld-eScan | Adware.Xadupi.B, Adware.Agent.RUE |
| NANO-Antivirus | Riskware.Nsis.Mutabaha.easlgq |
| Qihoo-360 | HEUR/QVM10.1.0000.Malware.Gen |
| Rising | Malware.Generic!h7qLB6NrXAD@5 (Thunder) |
| Symantec | PUA.Downloader |
| VBA32 | suspected of Trojan.Downloader.gen.h |
| Yandex | Riskware.Agent! |
| nProtect | Adware.Agent.RUE, Adware.Xadupi.B |
The detection percentage is based on that I have collected 781 scan reports for the Yanling Sun files. 71 of these scan results came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: