Did you just run into a download or a file on your computer that has a digital signature from Mtechnology LTD? Some of the security products refers to the detected files as Trojan.Win64.Superfish.c and Trojan/Superfish.j. The detection rate for the Mtechnology LTD files collected here is 7%. Please read on for more details.
You'll typically notice Mtechnology LTD 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 the digital signature details for Mtechnology LTD with the following steps:
Here is a screengrab of a file that has been digitally signed by Mtechnology LTD:

As you can see in the screenshot above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Mtechnology LTD 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 examine the address for Mtechnology LTD, such as the street name, city and country.
COMODO Code Signing CA 2 has issued the Mtechnology LTD certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the Mtechnology LTD files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 4/57 | prxwfp64.sys |
Here's the detection names for the Mtechnology LTD files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| Baidu-International | Trojan.Win64.Superfish.c |
| Jiangmin | Trojan/Superfish.j |
| Kaspersky | Trojan.Win64.Superfish.c |
| Panda | Generic Suspicious |
The detection percentage is based on the fact that I've gathered 57 scan reports for the Mtechnology LTD files. 4 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: