Did you just find a download or a file on your computer that has been digitally signed by Rei Rewnin? Some of the security products refers to the detected files as Application.Generic.1488723 and Trojan.Win32.Generic!BT. The detection rate for the Rei Rewnin files collected here is 39%. Please read on for more details.
You will probably notice Rei Rewnin 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 Rei Rewnin certificate with the following procedure:
Here is a screenshot of a file that has been digitally signed by Rei Rewnin:

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 Rei Rewnin 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 view the address for Rei Rewnin, such as the street name, city and country.
Akh Toirru has issued the Rei Rewnin 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 Rei Rewnin files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 22/56 | Oemupfahdh64.dll |
Here is the detection names for the Rei Rewnin files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic_r.AUG |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Application.Generic.1488723 |
| Agnitum | Riskware.Komodia! |
| Arcabit | Application.Generic.D16B753 |
| Avast | Win64:Malware-gen |
| Avira | ADWARE/PennyBee.Gen |
| BitDefender | Application.Generic.1488723 |
| Comodo | ApplicUnwnt |
| Cyren | W64/Application.IXRN-3497 |
| ESET-NOD32 | a variant of Win64/Riskware.Komodia.D |
| F-Secure | Application.Generic.1488723 |
| Fortinet | Riskware/Komodia |
| GData | Application.Generic.1488723 |
| Ikarus | AdWare.PennyBee |
| K7AntiVirus | Trojan ( 004ceb451 ) |
| K7GW | Trojan ( 004ceb451 ) |
| Malwarebytes | PUP.Optional.Winsock.HijackBoot |
| MicroWorld-eScan | Application.Generic.1488723 |
| Rising | PE:Malware.Generic/QRS!1.9E2D[F1] |
| Tencent | Win64.Risk.Riskware.Aiif |
| VIPRE | Trojan.Win32.Generic!BT |
The detection percentage is based on that I have gathered 56 scan results for the Rei Rewnin files. 22 of these scan results came up with some sort of detection. 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: