Did you just find a download or a file on your computer that has a digital signature from GO SAFER LLC? Some of the security products refers to the detected files as Gen:Variant.Zusy.131977 and Trojan.Win32.Generic!BT. The detection rate for the GO SAFER LLC files collected here is 27%. Please read on for more details.
You will probably see GO SAFER LLC when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the GO SAFER LLC certificate with the following steps:
Here's a screenshot of a file that has been digitally signed by GO SAFER LLC:

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 GO SAFER LLC and that the file has not been tampered with.
If you click the View Certificate button shown in the screencap 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 examine the address for GO SAFER LLC, such as the street name, city and country.
Go Daddy Secure Certification Authority and Go Daddy Secure Certificate Authority - G2 has issued the GO SAFER LLC certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the GO SAFER LLC files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 4/56 | gosaferdrv.sys |
| 27/57 | gosafer.exe |
Here is the detection names for the GO SAFER LLC files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Gen:Variant.Zusy.131977 |
| AVG | Generic6.TIJ |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Gen:Variant.Zusy.131977 |
| Agnitum | Riskware.Agent!, PUA.Delf! |
| Antiy-AVL | GrayWare[AdWare:not-a-virus]/Win32.Delf |
| Avira | APPL/BrAppWare.A |
| BitDefender | Gen:Variant.Zusy.131977 |
| DrWeb | Trojan.Fraudster.1619 |
| ESET-NOD32 | a variant of Win64/NetFilter.A potentially unsafe, a variant of Win32/Adware.BrAppWare.A |
| Emsisoft | Gen:Variant.Zusy.131977 (B) |
| F-Secure | Gen:Variant.Zusy.131977 |
| GData | Gen:Variant.Zusy.131977 |
| Ikarus | PUA.BrAppWare |
| K7AntiVirus | Adware ( 004b70501 ) |
| K7GW | Adware ( 004b70501 ) |
| Malwarebytes | Adware.Agent |
| McAfee | Artemis!C1908176B417 |
| McAfee-GW-Edition | Artemis |
| MicroWorld-eScan | Gen:Variant.Zusy.131977 |
| Panda | PUP/GoSave |
| Qihoo-360 | HEUR/QVM05.1.Malware.Gen |
| Sophos | Generic PUA IF |
| Symantec | WS.Reputation.1 |
| Tencent | Win32.Adware.Delf.Sxdw |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0221 |
| VBA32 | AdWare.Delf |
| VIPRE | Trojan.Win32.Generic!BT |
| Zillya | Adware.Delf.Win32.2271 |
The detection percentage is based on that I've collected 113 scan reports for the GO SAFER LLC files. 31 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 has been done on certificates with the following serial numbers: