Did you just stumble upon a download or a file on your computer that has been digitally signed by HypeNet? Some of the security products refers to the detected files as Gen:Variant.Adware.SwiftBrowse.1 and Yontoo (fs). The detection rate for the HypeNet files collected here is 32%. Please read on for more details.
You'll typically notice HypeNet when double-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 HypeNet certificate with the following steps:
Here is a screenshot of a file that has been signed by HypeNet:

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 HypeNet and that the file has not been tampered with.
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 examine the address for HypeNet, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the HypeNet certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the HypeNet files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 14/57 | HypeNetBHO.dll |
| 12/51 | {b1ce3ece-1927-4e6e-b064-2f9628964a7a}gw64.sys |
| 7/54 | {b1ce3ece-1927-4e6e-b064-2f9628964a7a}t.sys |
| 36/57 | maintainer.exe |
Here is the detection names for the HypeNet files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Hypeet, Generic6.DAP |
| AVware | Yontoo (fs), Trojan.Win32.Generic!BT |
| Ad-Aware | Gen:Variant.Adware.SwiftBrowse.1 |
| Agnitum | Trojan.BPlug!, PUA.Yotoon! |
| AhnLab-V3 | Adware/Win32.Agent, Adware/Win32.SwiftBrowse |
| Antiy-AVL | Trojan/Win32.TSGeneric, GrayWare[AdWare:not-a-virus]/Win32.Yotoon.bfm |
| Avast | Win32:PUP-gen [PUP] |
| Avira | ADWARE/BrowseFox.Gen2, Adware/BrowseFox.A.282, ADWARE/BrowseFox.Gen7 |
| Baidu-International | Adware.Win32.BrowseFox.bG, Adware.Win32.BrowseFox.V |
| BitDefender | Gen:Variant.Adware.SwiftBrowse.1 |
| Bkav | W32.HfsAdware.5F79, W32.HfsAdware.B15B |
| CAT-QuickHeal | AdWare.Yotoon.A5 |
| ClamAV | Win.Adware.Agent-22685 |
| Comodo | Application.Win32.BrowseFox.B |
| Cyren | W32/S-f64f6ec1!Eldorado, W32/A-de841313!Eldorado |
| DrWeb | Trojan.Yontoo.1016, Trojan.BPlug.437 |
| ESET-NOD32 | a variant of Win32/BrowseFox.AE potentially unwanted, Win32/BrowseFox.V potentially unwanted |
| Emsisoft | Gen:Variant.Adware.SwiftBrowse.1 (B) |
| F-Prot | W32/S-f64f6ec1!Eldorado, W32/A-de841313!Eldorado |
| F-Secure | Gen:Variant.Adware.SwiftBrowse |
| GData | Gen:Variant.Adware.SwiftBrowse.1 |
| Ikarus | AdWare.BrowseFox, AdWare.SpadeCast |
| Jiangmin | AdWare/SwiftBrowse.dxt, AdWare/Yotoon.m, AdWare/Yotoon.ap |
| K7AntiVirus | Trojan ( 004af26b1 ) |
| K7GW | Trojan ( 004af26b1 ) |
| Kaspersky | not-a-virus:AdWare.Win32.Yotoon.bfm |
| Kingsoft | Win32.Troj.SwiftBrowse.BA.(kcloud) |
| Malwarebytes | PUP.Optional.HypeNet.A, PUP.Optional.SwiftBrowse |
| McAfee | Artemis!415652DFAC23, BrowseFox-FTR |
| McAfee-GW-Edition | Artemis!415652DFAC23, BrowseFox-FTR |
| MicroWorld-eScan | Gen:Variant.Adware.SwiftBrowse.1 |
| NANO-Antivirus | Trojan.Win32.Yontoo.dnkubo, Riskware.Win32.Yotoon.denstu, Riskware.Win32.Kranet.dgiwfc |
| SUPERAntiSpyware | Adware.SwiftBrowse |
| Sophos | BrowseSmart |
| Symantec | Yontoo.C!gen2 |
| Tencent | Win32.Adware.Yotoon.Hmrc |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0713 |
| VBA32 | AdWare.MSIL.Agent, AdWare.Yotoon |
| VIPRE | Yontoo (fs), Trojan.Win32.Generic!BT |
| Zillya | Adware.Yotoon.Win64.6, Adware.Kranet.Win32.476 |
| nProtect | Trojan-Clicker/W32.Yotoon.123624 |
The detection percentage is based on that I've collected 219 scan results for the HypeNet files. 69 of these scan results 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 has been done on certificates with the following serial numbers: