Did you just find a download or a file on your computer that has a digital signature from 16QP LIMITED? Some of the security products refers to the detected files as PUA.CoinMiner!8.4639 (CLOUD) and Trojan.BtcMine.2535. The detection rate for the 16QP LIMITED files collected here is 11%. Please read on for more details.
You will typically see 16QP LIMITED 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 view additional details from the 16QP LIMITED certificate with the following steps:
Here's a screenshot of a file that has been digitally signed by 16QP LIMITED:

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 16QP LIMITED and that no one has tampered with the file.
If you click the View Certificate button shown in the screencap 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 see the address for 16QP LIMITED, such as the street name, city and country.
COMODO RSA Code Signing CA has issued the 16QP LIMITED 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 16QP LIMITED files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 10/69 | nsrv.exe |
| 5/68 | BaseNanoServicePackUpdater.exe |
Here's the detection names for the 16QP LIMITED files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AhnLab-V3 | Unwanted/Win32.BitMiner.C2542716 |
| Baidu | Win32.Trojan.WisdomEyes.16070401.9500.9713 |
| DrWeb | Trojan.BtcMine.2535 |
| Kaspersky | not-a-virus:RiskTool.Win32.BitCoinMiner.jsrx |
| McAfee | Artemis!474EACCDEDF9 |
| McAfee-GW-Edition | Artemis |
| Microsoft | PUA:Win32/CoinMiner |
| Rising | PUA.CoinMiner!8.4639 (CLOUD) |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0826 |
| Webroot | W32.Adware.Gen |
The detection percentage is based on that I've gathered 137 scan reports for the 16QP LIMITED files. 15 of these scan reports 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 based on certificates with the following serial numbers: