Did you just run into a download or a file on your computer that has a digital signature from Fact Fire? Some of the security products refers to the detected files as Adware.BrowseFox.BS and Adware.SwiftBrowse.CH. The detection rate for the Fact Fire files collected here is 51%. Please read on for more details.
You will probably notice Fact Fire when running 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 Fact Fire digital signature with the following procedure:
Here is a screencap of a file signed by Fact Fire:

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 Fact Fire and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see 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 Fact Fire, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Fact Fire 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 Fact Fire files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 13/56 | {2585a87e-4472-4eab-a723-4e0e77673932}gt64.sys |
| 33/57 | FactFirebho.dll |
| 30/57 | utilFactFire.exe |
| 27/54 | {7b5cbbe4-33a0-48eb-b018-f50acbcd769c}gt.sys |
| 30/57 | {00a91ae3-5673-4e0a-af10-1aaa160e8eb4}gw64.sys |
| 38/57 | {00a91ae3-5673-4e0a-af10-1aaa160e8eb4}w64.sys |
Here is the detection names for the Fact Fire files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| AVG | Generic.4AE, AdPlugin.DIC, WebFilter.AI, AdPlugin.DAI |
| AVware | Trojan.Win32.Generic!BT, Yontoo (fs) |
| Ad-Aware | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| AegisLab | AdWare.MSIL.Kranet |
| Agnitum | PUA.SwiftBrowse!, Riskware.Agent! |
| AhnLab-V3 | PUP/Win32.BrowseFox |
| Antiy-AVL | RiskWare[RiskTool]/Win32.NetFilter.q, GrayWare[NetTool:not-a-virus]/Win64.NetFilter.a |
| Arcabit | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| Avast | Win32:BrowseFox-HY [PUP] |
| Avira | ADWARE/BrowseFox.Gen2, ADWARE/BrowseFox.Gen7, ADWARE/BrowseFox.A.28, ADWARE/BrowseFox.drc |
| Baidu | Win32.Adware.BrowseFox.g |
| Baidu-International | Adware.MSIL.BrowseFox.G |
| BitDefender | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| Bkav | W64.HfsAdware.4D5B, W32.HfsAdware.6544, W64.HfsAdware.6544 |
| CAT-QuickHeal | PUA.Factfire.Gen |
| ClamAV | Win.Adware.Netfilter-183, Win.Adware.Netfilter-130, Win.Adware.Swiftbrowse-497 |
| Comodo | TrojWare.Win32.AltBrowse.IZZV |
| Cyren | W64/A-89938c80!Eldorado, W32/S-f64f6ec1!Eldorado, W32/S-bc825f4f!Eldorado, W32/A-b3b70cb0!Eldorado, W64/A-59c9c70a!Eldorado |
| DrWeb | Trojan.Yontoo.1734 |
| ESET-NOD32 | a variant of Win64/NetFilter.A potentially unsafe, a variant of Win32/BrowseFox.AE potentially unwanted, a variant of MSIL/BrowseFox.G potentially unwanted, a variant of Win32/NetFilter.A potentially unsafe |
| Emsisoft | Adware.BrowseFox.BS (B), Adware.SwiftBrowse.CH (B) |
| F-Prot | W64/A-89938c80!Eldorado, W32/S-f64f6ec1!Eldorado, W32/S-bc825f4f!Eldorado, W32/A-b3b70cb0!Eldorado, W64/A-59c9c70a!Eldorado |
| F-Secure | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| GData | Adware.BrowseFox.BS, Win32.Riskware.Netfilter.A, Adware.SwiftBrowse.CH |
| Ikarus | PUA.BrowseFox, not-a-virus:RiskTool.NetFilter |
| Jiangmin | AdWare/Yotoon.as, AdWare/SwiftBrowse.dxt |
| K7AntiVirus | Trojan ( 004b55d71 ), Adware ( 700000121 ), Unwanted-Program ( 004c19911 ), Adware ( 0040f9f21 ) |
| K7GW | Trojan ( 004b55d71 ), Adware ( 700000121 ), Unwanted-Program ( 004c19911 ), Adware ( 0040f9f21 ) |
| Kaspersky | not-a-virus:RiskTool.Win32.NetFilter.q, not-a-virus:NetTool.Win64.NetFilter.k |
| Malwarebytes | PUP.Optional.BrowseFox |
| McAfee | Artemis!6D8B1E510960, BrowseFox-FAF |
| McAfee-GW-Edition | BehavesLike.Win64.Suspicious.qh, Artemis, BrowseFox-FAF, BehavesLike.Win32.Suspicious.qh, BehavesLike.Win64.PUPAmonetize.ph |
| MicroWorld-eScan | Adware.BrowseFox.BS, Adware.SwiftBrowse.CH |
| NANO-Antivirus | Trojan.Win32.Yontoo.dnkubo, Riskware.Win32.BPlug.djpkri, Riskware.Win32.NetFilter.dgqvkd |
| Panda | Generic Suspicious |
| Qihoo-360 | Win32/Virus.Adware.708, QVM00.1.Malware.Gen |
| Rising | PE:Adware.BrowseFox!6.1D8B, PE:Adware.BrowserFox!1.A127 [F], PE:Adware.BrowserFox!1.A127[F1] |
| SUPERAntiSpyware | Adware.BrowseFox/Variant, PUP.AirGlobe/Variant, Adware.SwiftBrowse/Variant |
| Sophos | Browse Fox, Browse Fox (PUA) |
| Tencent | Trojan.Win32.Qudamah.Gen.14, Win32.Risk.Adware.Pkgw, Win32.Risk.Adware.Swum |
| TrendMicro | PUA_BROWSEFOX |
| TrendMicro-HouseCall | PUA_BROWSEFOX |
| VBA32 | AdWare.MSIL.Agent, AdWare.Yotoon |
| VIPRE | Trojan.Win32.Generic!BT, Yontoo (fs) |
| Zillya | Backdoor.PePatch.Win32.72245, Adware.Yotoon.Win64.14 |
| nProtect | Adware.BrowseFox.BS, Trojan-Clicker/W32.Yotoon.48784 |
The detection percentage is based on the fact that I have gathered 338 scan results for the Fact Fire files. 171 of these scan reports came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
The analysis is based on certificates with the following serial numbers: