Did you just stumble upon a download or a file on your computer that has been digitally signed by Clock Hand? Some of the security products refers to the detected files as Adware.SwiftBrowse.CH and Generic.168. The detection rate for the Clock Hand files collected here is 35%. Please read on for more details.
You will typically notice Clock Hand when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view the additional details from the Clock Hand digital signature with the following procedure:
Here's a screengrab of a file digitally signed by Clock Hand:

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 Clock Hand 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 examine the address for Clock Hand, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the Clock Hand certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the Clock Hand files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 2/57 | ClockHandbho.dll |
| 17/57 | ClockHandbho.dll |
| 16/56 | {8ec7a18b-bb06-4e8b-bc9b-34809b4a9468}gt.sys |
| 16/57 | ClockHandbho.dll |
| 19/55 | updateClockHand.exe |
| 21/57 | {f4191bb0-3007-4fbd-b83f-cc45648f3845}gw64.sys |
| 24/57 | {f4191bb0-3007-4fbd-b83f-cc45648f3845}gw64.sys |
| 21/56 | {3788502c-c1e8-40a8-8914-655def81ee5b}gw64.sys |
| 16/56 | ClockHand.BrowserAdapter64.exe |
| 17/57 | {d3faa606-99ad-4927-8f30-167a217dc4db}gt.sys |
| 29/57 | ClockHand.expext.exe |
| 2/57 | 65F7D090_stp.EXE |
Here's the detection names for the Clock Hand files. I've grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| ALYac | Adware.NetFilter.J, Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor.173090 |
| AVG | Generic.168, Generic_r.YJ, AdPlugin.CUB |
| AVware | Trojan.Win32.Generic!BT, Yontoo (fs), Adware.BrowseFox |
| Ad-Aware | Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor.173090 |
| Agnitum | Riskware.Agent!, Riskware.NetTool! |
| AhnLab-V3 | Adware/Win32.BrowseFox, PUP/Win32.BrowseFox |
| Antiy-AVL | GrayWare[NetTool:not-a-virus]/Win64.NetFilter.a, RiskWare[WebToolbar:not-a-virus]/Win32.Agent |
| Avast | MSIL:BrowseFox-BA [PUP] |
| Avira | ADWARE/BrowseFox.Gen2, ADWARE/BrowseFox.Gen7 |
| Baidu-International | Adware.Win32.BrowseFox.AE, Adware.MSIL.BrowseFox.G, Adware.Win64.BrowseFox.CO, Adware.Win32.BrowseFox.AA |
| BitDefender | Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor.173090 |
| Bkav | W32.HfsAdware.F6FC, W32.HfsAdware.9A76, W32.HfsAdware.BAD9, W32.HfsAdware.9A23, W32.HfsAdware.22D9, W32.HfsAdware.A63A |
| ClamAV | Win.Adware.Netfilter-130, Win.Adware.Swiftbrowse-497, Win.Adware.Browsefox-378, Win.Adware.Agent-38510 |
| Comodo | TrojWare.Win32.AltBrowse.IZZV, Application.Win32.BrowseFox.AK |
| Cyren | W32/S-f64f6ec1!Eldorado, W32/A-b3b70cb0!Eldorado, W32/S-e8c6878a!Eldorado, W64/A-59c9c70a!Eldorado, W64/S-ae7ba29a!Eldorado, W32/S-43570a6e!Eldorado |
| DrWeb | Trojan.Yontoo.632, Trojan.Yontoo.1734, Tool.NetFilter.313, Trojan.Yontoo.1022 |
| ESET-NOD32 | a variant of Win32/BrowseFox.AE potentially unwanted, a variant of Win32/Komodia.A potentially unsafe, a variant of MSIL/BrowseFox.G potentially unwanted, Win64/BrowseFox.CO potentially unwanted, a variant of Win32/NetFilter.A potentially unsafe, a variant of Win32/BrowseFox.AA potentially unwanted, Win32/BrowseFox.C potentially unwanted |
| Emsisoft | Adware.SwiftBrowse.CH (B), Gen:Variant.Adware.Graftor.173090 (B) |
| F-Prot | W32/S-f64f6ec1!Eldorado, W32/A-b3b70cb0!Eldorado, W32/S-e8c6878a!Eldorado, W64/A-59c9c70a!Eldorado, W64/S-ae7ba29a!Eldorado, W32/S-43570a6e!Eldorado |
| F-Secure | Adware.NetFilter.J, Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor |
| GData | Adware.NetFilter.J, Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor.173090 |
| Ikarus | AdWare.BrowseFox |
| Jiangmin | AdWare/SwiftBrowse.dxt, AdWare/Yotoon.aq, AdWare/Yotoon.kp, AdWare/LinkSwift.ach |
| K7AntiVirus | Unwanted-Program ( 004a8e8b1 ), Adware ( 700000121 ), Adware ( 0040f9f21 ), Trojan ( 004b50b11 ), Unwanted-Program ( 004b51ae1 ) |
| K7GW | Trojan ( 004b55d71 ), Adware ( 700000121 ), Adware ( 0040f9f21 ), Trojan ( 004b50b11 ) |
| Malwarebytes | PUP.Optional.ClockHand.A |
| McAfee | BrowseFox-FWI, Artemis!842498CC91DD, BrowseFox-FUU, Artemis!74D8D2426CB5, BrowseFox-FVA |
| McAfee-GW-Edition | BrowseFox-FWI, Artemis, BrowseFox-FUU, BrowseFox-FVA |
| MicroWorld-eScan | Adware.SwiftBrowse.CH, Gen:Variant.Adware.Graftor.173090 |
| NANO-Antivirus | Trojan.Win32.Yontoo.dnkubo, Riskware.Win32.NetFilter.dgqvkd, Riskware.Win32.BPlug.djpkri, Riskware.Win32.BrowseFox.dlbjxp |
| Panda | PUP/Astromenda |
| Qihoo-360 | HEUR/QVM30.1.Malware.Gen, Win32/Virus.Adware.708, HEUR/QVM00.1.Malware.Gen |
| Sophos | Browse Fox |
| TrendMicro | HS_BROWSEFOX.SM |
| TrendMicro-HouseCall | Suspicious_GEN.F47V0213, Suspicious_GEN.F47V0215, HS_BROWSEFOX.SM, Suspicious_GEN.F47V0301 |
| VBA32 | AdWare.MSIL.Agent |
| VIPRE | Trojan.Win32.Generic!BT, Yontoo (fs), Adware.BrowseFox |
| Zillya | Adware.Yotoon.Win64.10, Adware.Yotoon.Win64.14, Trojan.Katusha.Win32.37070 |
| nProtect | Adware.NetFilter.J, Adware.SwiftBrowse.CH |
The detection percentage is based on the fact that I've gathered 1077 scan reports for the Clock Hand files. 380 of these scan results 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: