Did you just stumble upon a download or a file on your computer that has a digital signature from Greener Web? Some of the security products refers to the detected files as Adware.SwiftBrowse.AM and Adware.SwiftBrowse.AZ. The detection rate for the Greener Web files collected here is 26%. Please read on for more details.
You'll typically notice Greener Web when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Greener Web certificate with the following procedure:
Here's a screenshot of a file digitally signed by Greener Web:

As you can see in the screengrab above, Windows states that "This digital signature is OK". This means that the file has been published by Greener Web 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, and so on. You can also see the address for Greener Web, such as the street name, city and country.
DigiCert Assured ID Code Signing CA-1 and VeriSign Class 3 Code Signing 2010 CA has issued the Greener Web certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the Greener Web files I've collected, thanks to the FreeFixer users.
Here is the detection names for the Greener Web files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.SwiftBrowse.AZ |
| AVG | Generic5.ASTV, Greeneb.5FD, Greenerweb.92D, AdPlugin.CXA |
| AVware | Trojan.Win32.Generic!BT |
| Ad-Aware | Gen:Variant.Adware.BHO.Agent.4, Adware.SwiftBrowse.AM, Adware.BrowseFox.A, Adware.SwiftBrowse.AZ |
| Agnitum | PUA.Agent!, PUA.Yotoon! |
| AhnLab-V3 | Adware/Win32.SwiftBrowse |
| AntiVir | APPL/BrowseFox.Gen2 |
| Antiy-AVL | GrayWare[AdWare:not-a-virus]/Win32.Agent, Trojan/Win32.TSGeneric, GrayWare[AdWare:not-a-virus]/Win32.Kranet |
| Avast | Win32:PUP-gen [PUP], Win32:BrowseFox-CG [PUP] |
| Baidu-International | Adware.Win32.BrowseFox.BF, Adware.Win32.BrowseFox.bG, Adware.Win32.BrowseFox.71, Adware.Win32.BrowseFox.BG |
| BitDefender | Gen:Variant.Adware.BHO.Agent.4, Adware.SwiftBrowse.AM, Adware.BrowseFox.A, Adware.SwiftBrowse.AZ |
| Bkav | W32.HfsAdware.9AE2 |
| CAT-QuickHeal | AdWare.Agent.r5 (Not a Virus) |
| ClamAV | Win.Adware.Agent-7106, Win.Adware.Agent-22685, Win.Adware.Swiftbrowse-79 |
| Comodo | Application.Win32.Altbrowse.AK, TrojWare.Win32.AltBrowse.IZZV |
| Cyren | W32/A-c99f2d8b!Eldorado |
| DrWeb | Trojan.BPlug.28, Trojan.BPlug.117, Trojan.BPlug.281, Trojan.Yontoo.1741 |
| ESET-NOD32 | a variant of Win32/BrowseFox.H, a variant of Win32/BrowseFox.F, Win32/BrowseFox.V, a variant of Win32/NetFilter.A potentially unsafe |
| Emsisoft | Gen:Variant.Adware.BHO.Agent.4 (B), Adware.SwiftBrowse.AM (B), Adware.BrowseFox.A (B), Adware.SwiftBrowse.AZ (B) |
| F-Prot | W32/A-c99f2d8b!Eldorado |
| F-Secure | Gen:Variant.Adware.BHO.Agent.4, Adware.SwiftBrowse.AM, Adware.BrowseFox.A, Adware.SwiftBrowse.AZ |
| Fortinet | Adware/Agent |
| GData | Gen:Variant.Adware.BHO.Agent.4, Adware.SwiftBrowse.AM, Adware.BrowseFox.A, Win32.Application.Browsefox.F, Adware.SwiftBrowse.AZ |
| Ikarus | AdWare.SpadeCast, AdWare.BHO, AdWare.SwiftBrowse |
| Jiangmin | AdWare/Yotoon.l |
| K7AntiVirus | Unwanted-Program ( 00454f261 ), Unwanted-Program ( 004b2a6f1 ) |
| K7GW | Unwanted-Program ( 00454f261 ), Unwanted-Program ( 004b2a6f1 ) |
| Kaspersky | not-a-virus:AdWare.Win32.Agent.ahbx, not-a-virus:AdWare.Win64.Yotoon.a |
| Kingsoft | Win32.Troj.Agent.ah.(kcloud) |
| Malwarebytes | PUP.Optional.GreenerWeb.A |
| McAfee | Artemis!A46AC06B0825, Artemis!510732B2DC34, Artemis!2833AF21A861, Artemis!6A1B7D17D77A, Artemis!C3CC75C05C3E, Artemis!A4AB50653AB2, Artemis!B87D867AF428 |
| McAfee-GW-Edition | Artemis!A46AC06B0825, Artemis!510732B2DC34, Artemis!2833AF21A861, Artemis!6A1B7D17D77A, Artemis!C3CC75C05C3E, Artemis!A4AB50653AB2, Artemis!B87D867AF428 |
| MicroWorld-eScan | Gen:Variant.Adware.BHO.Agent.4, Adware.SwiftBrowse.AM, Adware.BrowseFox.A, Adware.SwiftBrowse.AZ |
| NANO-Antivirus | Riskware.Win32.Agent.cqycvd, Riskware.Win32.Kranet.dgiwfc, Riskware.Win32.Yotoon.ddghtt |
| Panda | Trj/CI.A |
| Qihoo-360 | HEUR/Malware.QVM30.Gen |
| SUPERAntiSpyware | Adware.BrowseFox/Variant, Adware.Yontoo/Variant |
| Sophos | Generic PUA CA, BrowseSmart, Generic PUA ML, Generic PUA OF |
| Symantec | WS.Reputation.1, Yontoo.C |
| Tencent | Trojan.Win32.Qudamah.Gen.16 |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0619, Suspicious_GEN.F47V0610, Suspicious_GEN.F47V0621, Suspicious_GEN.F47V0611, Suspicious_GEN.F47V0612 |
| VBA32 | AdWare.Agent, AdWare.Kranet, AdWare.Win64.Yotoon |
| VIPRE | Yontoo (fs), Trojan.Win32.Generic!BT |
| Zillya | Adware.Agent.Win32.9168, Adware.Yotoon.Win64.1 |
| nProtect | Trojan-Clicker/W32.Agent.249632.B, Adware.SwiftBrowse.AM, Adware.SwiftBrowse.AZ |
The detection percentage is based on the fact that I have gathered 1656 scan reports for the Greener Web files. 430 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 has been done on certificates with the following serial numbers: