84,488,480 programs installed

Should I remove ClearThink?

What percent of users and experts removed it?
83% remove it17% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #8,621
United States Rank #8,666
Reach 0.0452%
Lifespan of installation (until removal)
< 7.52 days
221.79 days >
Average installed length: 116.53 days


2014.09.23.182523 0.11%
2014.09.23.134035 0.11%
2014.09.23.094022 0.45%
2014.09.23.054025 0.11%
2014.09.23.014022 0.22%
2014.09.22.214018 0.56%
2014.09.22.174018 0.67%
2014.09.22.121917 0.11%
2014.09.22.041915 0.11%
2014.09.22.001915 0.22%
2014.09.21.201914 0.11%
2014.09.21.161913 0.45%
2014.09.21.121913 0.11%
2014.09.21.081912 0.11%
2014.09.21.041911 0.11%
2014.09.21.001911 0.22%
2014.09.20.201910 0.22%
2014.09.20.161909 0.56%
2014.09.20.121909 0.11%
2014.09.20.081908 0.22%
2014.09.20.003338 0.45%
2014.09.19.203301 0.34%
2014.09.19.163329 0.22%
2014.09.19.123314 0.79%
2014.09.19.083256 0.11%
2014.09.19.003347 0.11%
2014.09.18.203302 0.11%
2014.09.18.163324 0.11%
2014.09.18.123247 0.34%
2014.09.18.043243 0.11%
2014.09.17.203242 0.22%
2014.09.17.163315 0.34%
2014.09.17.083241 0.56%
2014.09.17.043239 0.11%
2014.09.17.003304 0.11%
2014.09.16.163321 0.56%
2014.09.16.123227 0.11%
2014.09.16.083225 0.11%
2014.09.16.043223 0.22%
2014.09.16.003536 0.11%
2014.09.15.163557 0.45%
2014.09.15.123517 0.56%
2014.09.15.083517 0.22%
2014.09.15.013036 0.34%
2014.09.15.003600 0.22%
2014.09.14.215736 0.11%
2014.09.14.181755 0.22%
2014.09.14.163556 0.67%
2014.09.14.083510 1.46%
2014.09.14.003537 0.22%
2014.09.13.221520 0.11%
246 versions


What is ClearThink?

ClearThink is an advertising supported (adware) extension that runs in the context of the user's web browser as well as a process in the background. This adware program is typically bundled by a third-party download manager which bundles potentially unwanted software offers in order to monetize installs. Once running, the software is designed to deliver advertisements to the browser in a number of common formats such as banner, text hyper-links, inline text ads and/or transitional. These ads are not affiliated with nor endorsed by the underlying website on which they appear. Many banners are either injected in the header or footer of the web page or simply replace any legitimate ads the web site already has. Many of the advertisements are considered malvertising since they promote products that could cause harm to the user's PC. A typical promotion is for additional software downloads (including adware and bundlers) as well as price comparison and search ads. In some cases, ad placements may contain links to further information about the ad (by clicking the "About this Ad".)


The most used version is 2014.09.14.083510, with over 39% of all installations currently using this version. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. It adds a Browser Helper Object (BHO) to Internet Explorer. The main program executable is ClearThink.FirstRun.exe. Typically most users end up uninstalling this just after a few days. The software installer includes 18 files and is usually about 6.71 MB (7,030,733 bytes).
  • Possible malware installed by this program
  • Loads into the web browser
  • Adds a background Windows Service
  • Installed as part of a co-bundle
  • Injects advertisements unassociated with the underlying web page
  • Generally known to have a low reputation
  • The experts agree, you should remove it!
Warning, multiple anti-virus scanners have detected possible malware in ClearThink.
ClearThink.FirstRun.exe (844f0a6b166a17f0797a93531344b7a5) has been flagged by the following 14 scanners:
Anti-Virus softwareVersionDetection
Avira AntiVir APPL/BrowseFox.Gen
AVG 2015.0.3371 Generic
Baidu-International Adware.MSIL.BrowseFox.bG
ESET-NOD32 8.10270 a variant of MSIL/BrowseFox.G
K7 AntiVirus 13.183.13054 Trojan
K7GW 13.183.13043 Trojan ( 0049c6b11 )
Kaspersky not-a-virus:HEUR:AdWare.MSIL.Kranet
Kingsoft AntiVirus 331020.49267 Win32.Troj.Generic.a.(kcloud)
Malwarebytes v2014.08.25.12 PUP.Optional.Sambreel.A
McAfee 5600.7027 Artemis!844F0A6B166A
McAfee-GW-Edition 7.7027 Artemis!844F0A6B166A
Panda Antivirus Trj/Chgt.B
Qihoo-360 HEUR/Malware.QVM03.Gen
TrendMicro-HouseCall 7.2.237 Suspicious_GEN.F47V0810
ClearThinkBHO.dll (dc68b0d753f207fe622641eb1828a973) has been flagged by the following 40 scanners:
Anti-Virus softwareSoftware versionDetection
Lavasoft Ad-Aware Adware.SwiftBrowse.CN
Agnitum Outpost Riskware.Agent!
AhnLab-V3 2015.04.07.02 Win-PUP/BrowseFox.Gen
ALYac Adware.SwiftBrowse.CN
avast! 8.0.1489.320 Win32:BrowseFox-ET [PUP]
AVG BrowseFox.F
Avira ADWARE/BrowseFox.Gen2
AVware Yontoo (fs)
Baidu-International Adware.Win32.BrowseFox.BO
Bitdefender 7.2 Adware.SwiftBrowse.CN
Bkav FE W32.HfsAdware.8A69
Clam AntiVirus Win.Adware.Swiftbrowse-941
Comodo Security 21677 Application.Win32.BrowseFox.JM
Cyren W32/S-7bed2e86!Eldorado
Dr.Web Trojan.Yontoo.1742
Emsisoft Anti-Malware Adware.SwiftBrowse.CN (B)
ESET-NOD32 11435 a variant of Win32/BrowseFox.O potentially unwanted
Fortinet FortiGate 5.0.999.0 Riskware/BrowseFox
F-Prot W32/S-7bed2e86!Eldorado
F-Secure 11.0.19100.45 Adware.SwiftBrowse.CN
G Data 25 Adware.SwiftBrowse.CN
Jiangmin 16.0.100 Adware/Agent.aakf
K7 AntiVirus 9.202.15507 Trojan ( 004a011f1 )
K7GW 9.202.15505 Trojan ( 004a011f1 )
Malwarebytes PUP.Optional.ClearThink.A
McAfee BrowseFox
McAfee-GW-Edition v2015 BrowseFox
MicroWorld-eScan Adware.SwiftBrowse.CN
NANO AntiVirus Trojan.Win32.BPlug.dfogbn
nProtect 2015-04-07.01 Adware.SwiftBrowse.CN
Panda Antivirus Trj/CI.A
Qihoo-360 HEUR/QVM30.1.Malware.Gen
Sophos 4.98.0 Generic PUA PE
Symantec 20141.2.0.56 Trojan.Gen.2
Tencent Trojan.Win32.Qudamah.Gen.15
Trend Micro 9.740.0.1012 TROJ_GEN.F0C2C00LP14
TrendMicro-HouseCall 9.700.0.1001 TROJ_GEN.F0C2C00LP14
Vba32 AntiVirus AdWare.Kranet
VIPRE Antivirus 39132 Yontoo (fs)
Zillya Adware.SwiftBrowse.Win32.2679
updateClearThink.exe (f3d7aff378ff30a74922042e9f400cc8) has been flagged by the following 35 scanners:
Anti-Virus softwareSoftware versionDetection
Lavasoft Ad-Aware Adware.SwiftBrowse.CN
Agnitum Outpost Riskware.Agent!
AhnLab-V3 2014.11.14.00 PUP/Win32.SwiftBrowse
Antiy-AVL GrayWare[AdWare:not-a-virus,HEUR]/MSIL.Kranet
AVG Generic.C34
Avira ADWARE/BrowseFox.Gen7
AVware Yontoo (fs)
Baidu-International Adware.Win32.BrowseFox.bH
Bitdefender 7.2 Adware.SwiftBrowse.CN
CAT-QuickHeal 14.00 AdWare.MSIL.r3 (Not a Virus)
Comodo Security 20075 ApplicUnwnt
Dr.Web Trojan.BPlug.250
Emsisoft Anti-Malware Adware.SwiftBrowse.CN (B)
ESET-NOD32 10722 a variant of Win32/BrowseFox.H
Fortinet FortiGate 5.0.999.0 Adware/Kranet
F-Secure 11.0.19100.45 Adware.SwiftBrowse.CN
G Data 24 Adware.SwiftBrowse.CN
IKARUS anti.virus T3. PUA.BrowseFox
K7 AntiVirus 9.185.14007 Trojan ( 0049f7ad1 )
K7GW 9.185.14007 Trojan ( 020000001 )
Kaspersky not-a-virus:AdWare.Win32.SwiftBrowse.q
Kingsoft AntiVirus 2013.4.9.267 Win32.Troj.Generic.a.(kcloud)
Malwarebytes PUP.Optional.ClearThink.A
McAfee BrowseFox.c
McAfee-GW-Edition v2014.2 BrowseFox.c
MicroWorld-eScan Adware.SwiftBrowse.CN
Panda Antivirus Trj/Chgt.F
Qihoo-360 Win32/Virus.Adware.e4c
Sophos 4.98.0 Browse Fox
Symantec 20141.1.0.330 Trojan.Gen.2
Tencent Win32.Trojan.Falsesign.Eehb
Trend Micro 9.740.0.1012 TROJ_GEN.R0C1C0EJ914
TrendMicro-HouseCall 9.700.0.1001 TROJ_GEN.R0C1C0EJ914
VIPRE Antivirus 34774 Yontoo (fs)
Zillya Backdoor.PePatch.Win32.51902
       View all 89 all detections
ClearThink has been found to be bundled with 3rd party software. If you have not purposefully installed this, you should be safe uninstalling it.

Program detailsProgram details

Displayed publisher: ClearThink
URL: useclearthink.com/support
Help link: mailto:[email protected]
Installation folder: C:\Program Files\ClearThink
Uninstaller: C:\Program Files\ClearThink\ClearThinkuninstall.exe
Estimated size: 6.71 MB

Program filesFiles installed by ClearThink

Program executable:ClearThink.FirstRun.exe (Malware detected)
Path:C:\Program Files\ClearThink\ClearThink.FirstRun.exe
Additional files:
  • (Malware detected) ClearThinkbho.dll - ClearThink
  • ClearThink.FirstRun.exe - FirstRun
  • 7za.exe (by Igor Pavlov) - 7-Zip (7-Zip Standalone Console)
  • ClearThinkUn.exe
  • ClearThinkUninstall.exe
  • (Malware detected) updateClearThink.exe

Program behaviorsBehaviors exhibited

Internet Explorer BHO
  • ClearThinkBHO.dll is installed in Internet Explorer as a BHO (Browser Helper Object) under the name 'ClearThink' with the class of {7e6d4e3e-fc66-4036-9799-ce5c625c4c56}.
  • updateClearThink.exe runs as a service named 'Update ClearThink' (Update ClearThink).

How do I remove ClearThink?

You can uninstall ClearThink from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program ClearThink, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove ClearThink.
  4. If for some reason uninstallation fails, please install Microsoft's uninstall fixer utility which will help fix problems with programs that can't be uninstalled at support.microsoft.com.

How do I reset my web browser?

If your web browser homepage and search settings have been modfied by ClearThink you can restore them to their previous default settings.
Microsoft Internet Explorer
Mozilla Firefox
Google Chrome

Win 7 (SP1) 43%
Win 8.1 0%
Windows Service? Yes
(Installs a service)
Uninstall it 83%
Keep it 17%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 51.74%
Windows 10 37.60%
Windows XP 5.95%
Windows Vista 4.71%
Which OS releases does it run on?
Windows 7 Home Premium 21.53%
Windows 8.1 20.52%
Windows 7 Ultimate 15.22%
Windows 7 Professional 9.70%
Windows 8 5.98%
Microsoft Windows XP 5.86%

Distribution by countryGeography

43.18% of installs come from the United States
Which countries install it?
  United States 43.18%
  Brazil 10.63%
  France 5.55%
  United Kingdom 2.92%
  Germany 2.63%
  Italy 2.54%
  Canada 2.07%
  MA 1.98%
  India 1.88%
  Poland 1.79%
  Saudi Arabia 1.51%
  Russia 1.22%
  Netherlands 1.22%
  Australia 1.13%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 26.35%
Acer 21.62%
Dell 16.39%
ASUS 10.47%
Toshiba 7.94%
Samsung 6.59%
Lenovo 4.73%
Intel 0.84%
American Megatrends 0.84%
Sahara 0.84%
Common models
HP Pavilion g6 Notebook P... 3.76%
HP 2000 Notebook PC 3.38%
HP Pavilion dv6 Notebook ... 3.38%
HP Pavilion 15 Notebook P... 2.63%
Samsung RV411/RV511/E3511... 2.26%
ASUS All Series 2.26%

About Yontoo Technology

Yontoo, a subsidiary/alias of ad-hijacker Sambreel, is a publisher of ad-supported web browser extensions designed to inject and display advertisements within the browser.
Publisher URL: www.yontoo.com


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