Did you just run into a download or a file on your computer that is digitally signed by Forever Net? Some of the security products refers to the detected files as Adware.SwiftBrowse.CH and Gen:Variant.Adware.SwiftBrowse.8. The detection rate for the Forever Net files collected here is 46%. Please read on for more details.
You will typically notice Forever Net 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 the additional details from the Forever Net digital signature with the following steps:
Here's a screengrab of a file that has been digitally signed by Forever Net:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by Forever Net and that no one has tampered with the file.
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 see the address for Forever Net, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Forever Net certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Forever Net files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 13/57 | updateHoldPage.exe |
| 32/57 | HoldPage.PurBrowse.exe |
| 33/56 | HoldPage.BrowserAdapter.exe |
| 27/57 | {91975f83-f39c-43cf-aad4-0b3396b0f6db}gw64.sys |
Here's the detection names for the Forever Net files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Gen:Variant.Adware.Jaik.5645, Gen:Variant.Adware.SwiftBrowse.8, Adware.SwiftBrowse.CH |
| AVG | Generic.B51, AdPlugin.CUJ |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Gen:Variant.Adware.Jaik.5645, Gen:Variant.Adware.SwiftBrowse.8, Adware.SwiftBrowse.CH |
| Agnitum | Trojan.BPlug!, Riskware.Agent! |
| AhnLab-V3 | PUP/Win32.BrowseFox, PUP/Win32.Generic |
| Antiy-AVL | GrayWare[AdWare:not-a-virus,HEUR]/Win32.Kranet, GrayWare[AdWare:not-a-virus]/Win32.SwiftBrowse, GrayWare[NetTool:not-a-virus]/Win64.NetFilter.a |
| Avira | ADWARE/BrowseFox.Gen7, ADWARE/BrowseFox.Gen |
| Baidu-International | Adware.MSIL.BrowseFox.G, Adware.MSIL.BrowseFox.FoNe, Adware.Win32.BrowseFox.AC |
| BitDefender | Gen:Variant.Adware.Jaik.5645, Gen:Variant.Adware.SwiftBrowse.8, Adware.SwiftBrowse.CH |
| Bkav | W32.HfsAdware.2E18, W32.HfsAdware.1E5B, W64.HfsAdware.E5A9 |
| ClamAV | Win.Adware.Swiftbrowse-1101, Win.Adware.Agent-37332, Win.Adware.Swiftbrowse-497 |
| Comodo | Application.Win32.AltBrowse.ZPGI, TrojWare.Win32.BrowseFox.FX |
| Cyren | W32/S-cbad3557!Eldorado, W32/S-3ed5aa36!Eldorado, W32/S-a777f78c!Eldorado, W64/A-59c9c70a!Eldorado |
| DrWeb | Trojan.BPlug.929, Trojan.BPlug.934, Trojan.Yontoo.1734 |
| ESET-NOD32 | a variant of MSIL/BrowseFox.G potentially unwanted, a variant of Win32/NetFilter.A potentially unsafe, a variant of Win32/BrowseFox.AC potentially unwanted, a variant of Win64/NetFilter.A potentially unsafe |
| Emsisoft | Gen:Variant.Adware.Jaik.5645 (B), Gen:Variant.Adware.SwiftBrowse.8 (B), Adware.SwiftBrowse.CH (B) |
| F-Prot | W32/S-cbad3557!Eldorado, W32/S-3ed5aa36!Eldorado, W32/S-a777f78c!Eldorado, W64/A-59c9c70a!Eldorado |
| F-Secure | Gen:Variant.Adware.Jaik, Gen:Variant.Adware.SwiftBrowse, Adware.SwiftBrowse.CH |
| GData | Gen:Variant.Adware.Jaik.5645, Gen:Variant.Adware.SwiftBrowse.8, Adware.SwiftBrowse.CH |
| Jiangmin | AdWare/Kranet.dam, AdWare/Kranet.das |
| K7AntiVirus | Adware ( 700000121 ), Trojan ( 004b56221 ), Trojan ( 004b555d1 ), Adware ( 0040f9f21 ) |
| K7GW | Adware ( 700000121 ), Trojan ( 004b56221 ), Trojan ( 004b555d1 ), Adware ( 0040f9f21 ) |
| Kaspersky | not-a-virus:HEUR:AdWare.Win32.Kranet.heur |
| Malwarebytes | PUP.Optional.HoldPage.A |
| McAfee | BrowseFox-FWI, BrowseFox-FVX, BrowseFox-FVR, Artemis!24D35599FD32 |
| McAfee-GW-Edition | BrowseFox-FWI, BrowseFox-FVX, BrowseFox-FVR, BehavesLike.Win64.PUPAmonetize.ph |
| MicroWorld-eScan | Gen:Variant.Adware.Jaik.5645, Gen:Variant.Adware.SwiftBrowse.8, Adware.SwiftBrowse.CH |
| NANO-Antivirus | Trojan.Win32.BPlug.dnpvno, Riskware.Win32.SwiftBrowse.dnpvbt |
| Panda | Generic Suspicious |
| Qihoo-360 | Win32/Virus.Adware.708, HEUR/QVM10.1.Malware.Gen |
| Sophos | Browse Fox |
| Tencent | Win32.Risk.Adware.Wmjf, Win32.Risk.Adware.Lpca |
| TrendMicro | HS_BROWSEFOX.SM |
| TrendMicro-HouseCall | HS_BROWSEFOX.SM |
| VBA32 | AdWare.Kranet, AdWare.MSIL.Agent |
| VIPRE | Trojan.Win32.Generic!BT |
| Zillya | Backdoor.PePatch.Win32.64142, Trojan.Katusha.Win32.36918, Adware.Yotoon.Win64.14 |
| nProtect | Trojan-Clicker/W32.Kranet.296688, Adware.SwiftBrowse.CH |
The detection percentage is based on the fact that I've gathered 227 scan results for the Forever Net files. 105 of these scan results came up with some sort of detection. You can review the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: