Did you just run into a download or a file on your computer that is digitally signed by AppSmart Inc? Some of the security products refers to the detected files as Trojan.Win32.Generic!BT and Riskware ( 0049f6ae1 ). The detection rate for the AppSmart Inc files collected here is 42%. Please read on for more details.
You will probably notice AppSmart Inc when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view the additional details from the AppSmart Inc digital signature with the following steps:
Here's a screencap of a file that has been signed by AppSmart Inc:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This implies that the file has been published by AppSmart Inc and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can view 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 AppSmart Inc, such as the street name, city and country.
thawte SHA256 Code Signing CA has issued the AppSmart Inc 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 AppSmart Inc files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 26/62 | Prime-Update.exe |
Here's the detection names for the AppSmart Inc 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 |
| Avast | Win32:Adware-gen [Adw] |
| Avira | APPL/Downloader.Gen |
| CAT-QuickHeal | Softwarebundler.Techrelinst |
| CrowdStrike | malicious_confidence_67% (D) |
| DrWeb | Adware.Downware.18091 |
| Emsisoft | Application.Downloader (A) |
| GData | Win32.Application.Agent.TPYFGU |
| Invincea | virus.win32.sality.at |
| K7AntiVirus | Riskware ( 0049f6ae1 ) |
| K7GW | Riskware ( 0049f6ae1 ) |
| Kaspersky | HEUR:Trojan-Downloader.Win32.Generic |
| McAfee | Artemis!34EE23F00A21 |
| McAfee-GW-Edition | Artemis!Trojan |
| Microsoft | SoftwareBundler:Win32/Techrelinst |
| NANO-Antivirus | Trojan.Nsis.Wajam.eozmdv |
| Paloalto | generic.ml |
| Rising | Downloader.Generic!8.141 (cloud:NJwCyK8AaSJ) |
| SentinelOne | static engine - malicious |
| Symantec | Trojan.Gen.2 |
| Tencent | Win32.Trojan-downloader.Generic.Llrq |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0422 |
| VBA32 | suspected of Trojan.Downloader.gen.s |
| VIPRE | Trojan.Win32.Generic!BT |
| Webroot | W32.Adware.Gen |
| ZoneAlarm | HEUR:Trojan-Downloader.Win32.Generic |
The detection percentage is based on the fact that I've gathered 62 scan reports for the AppSmart Inc files. 26 of these scan reports came up with some sort of detection. If you like, 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: