Did you just run into a download or a file on your computer that is digitally signed by LEEYEON communication? Some of the security products refers to the detected files as Trojan.Win32.Generic!BT and a variant of Win32/Adware.Kraddare.HH. The detection rate for the LEEYEON communication files collected here is 31%. Please read on for more details.
You will probably notice LEEYEON communication 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 also view the LEEYEON communication certificate with the following steps:
Here's a screenshot of a file that has been digitally signed by LEEYEON communication:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by LEEYEON communication and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot above, you can see 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 view the address for LEEYEON communication, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the LEEYEON communication certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the LEEYEON communication files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 21/67 | fndelete.exe |
Here's the detection names for the LEEYEON communication files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVware | Trojan.Win32.Generic!BT |
| Antiy-AVL | Trojan/Win32.Delf |
| Avira | ADWARE/Kraddare.HH.3 |
| Cylance | Unsafe |
| Cyren | W32/GenPua.BA1C8CB7!Olympus |
| DrWeb | Trojan.Adkor.557 |
| ESET-NOD32 | a variant of Win32/Adware.Kraddare.HH |
| Fortinet | Riskware/Kraddare |
| Kingsoft | Win32.Troj.Generic.a.(kcloud) |
| MAX | malware (ai score=95) |
| McAfee | Artemis!BA1C8CB7C5A6 |
| McAfee-GW-Edition | GenericRXEQ-XP!4B864FAECA80 |
| Microsoft | PUA:Win32/Creprote |
| NANO-Antivirus | Trojan.Win32.Adkor.fbddwr |
| Panda | Trj/Genetic.gen |
| Qihoo-360 | HEUR/Malware.QVM11.Gen |
| Sophos | Generic PUA NM (PUA) |
| Symantec | Trojan.ADH.2 |
| VIPRE | Trojan.Win32.Generic!BT |
| Yandex | PUA.Kraddare! |
| Zillya | Adware.FindLockCRTD.Win32.5488 |
The detection percentage is based on that I have gathered 67 scan reports for the LEEYEON communication files. 21 of these scan reports 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: