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Smartbar by Linkury (Signed)

Warning 19 antivirus scanners has detected malware in various versions of quickshare.exe.


There are 10 versions of quickshare.exe in the wild, the latest version being quickshare.exe is run as a standard windows process with the logged in user's account privileges. By adding a startup entry to the run registry key, the file will be executed when the user logs into Windows. The average file size is about 16.01 KB. The file is a digitally signed and issued to Linkury by VeriSign. The executable is a .NET framework assembly utilizing the CLR. During the process's lifecycle, the typical CPU resource utilization is about 0.0030% including both foreground and background operations, the average private memory consumption is about 68.86 MB. Addionally, typically read and write I/O disk operations is about 6.88 MB per minute for reads and 3.81 KB per minute for writes.

What is quickshare.exe?

Smartbar (Snap.Do) is a web browser addin/toolbar with Internet Explorer, Chrome and Firefox. Snap.Do provides social integration features for Facebook and Twitter. Privacy Policy: In order to facilitate, refine, personalize and match the identification and presentation of our products results to your browsing preferences and habits, we collect information regarding your use of our Product including URL and information of websites you browse while Smartbar is installed.

About quickshare.exe (from Linkury)

Snap.do works on all 3 major web browsers – Google Chrome, Mozilla Firefox and Internet Explorer. Simply get it now to start snapping! Snap.do will always be there when you need it. Once you got it yo


File name:quickshare.exe
Product name:Smartbar
Typical file path:C:\users\user\appdata\local\smartbar\application\quickshare.exe
Original name:Smartbar.exe
Issued to:Linkury
Authority (CA):VeriSign
Expiration date:Saturday, December 05, 2015


(Note, the behaviors below are for all versions of quickshare.exe, select a unique version for details.)
Startup files (user) run
Runs under the registry key 'HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
  • 'Browser Infrastructure Helper' → C:\users\user\appdata\Local\Smartbar\Application\QuickShare.exe startup

MalwareMalware detections

Based on 40+ industry antivirus scanners, 19 of them detected the following malware.
Antivirus engineEngine versionDetectionFile version
AVG Toolbar.NC
Comodo Internet Security 16566 ApplicUnwnt
Dr.Web Trojan.MulDrop4.24551
ESET NOD32 7970 a variant of Win32/Toolbar.Linkury.A
ESET NOD32 8020 a variant of Win32/Toolbar.Linkury.A
ESET NOD32 8006 a variant of Win32/Toolbar.Linkury.A
ESET NOD32 8541 a variant of Win32/Toolbar.Linkury.A
Fortinet Adware/MSIL_Agent
Fortinet Adware/MSIL_Agent
Ikarus T3. not-a-virus:AdWare.MSIL
Ikarus T3. not-a-virus:AdWare.MSIL
Kaspersky not-a-virus:AdWare.MSIL.Agent.af
Kingsoft 2013.4.9.267 Win32.Troj.Generic.a.(kcloud)
NANO AntiVirus Trojan.Win32.MulDrop4.bobwdz
nProtect 2013-07-08.01 Trojan-Clicker/W32.Agent.13824.H
Trend Micro HouseCall 9.700.0.1001 TROJ_GEN.RCBH1B3
Trend Micro HouseCall 9.700.0.1001 TROJ_GEN.RCBH1B1
Trend Micro HouseCall 9.700.0.1001 TROJ_GEN.R0CBH01FO13
VIPRE Antivirus 19398 Adware.Linkury (fs)

VersionsAll file variations of quickshare.exe

MD5SHA-1File size
6aba032ff0327d8b64a5bed70551464a 3dd64cb4c5468f13d6e174e22f6b52c3240c4936 19.77 KB
8b9c04225dbb4af1f55f325fbe2bddb2 cef4254b17d897243644d7a06cac98bde81ad2b2 19.77 KB
9dc8318940403b38da23dadf3f130e89 b4f3245bd1441c32523bbd482e4684f0b1d5f225 19.77 KB
2c3239b5355babf5e575ddc1b3f573f7 1216c6bd493b48b534cc595fb0408005b8699386 19.77 KB
da2302b86e0cc3812de962928a82d1b2 3323edcd4befc4727ea756e3796e430d17d17790 13.5 KB
6e0b307ccf63bd8eaec7d24f0a09518b acf399d8c4e90a70c8c9dcc3259cbaace692bd09 13.5 KB
3e51d59ff061c51c2f479f3745f2db13 36e4aa1fc2ba40ec553064337e1d62fdc8f46b4a 13.5 KB
7fef82869e3482985fd5915f7e378732 a4fcd99282eb656aa66c7d36f463fa07bb0a89fc 13.5 KB
9e72ccf33352042bb044ba12939f3416 b0c32461bf87795888d1d31da58266eed927a850 13.5 KB
9738f8381abbae25733df953c31ba8c8 3ecc41f97e3533d487bad22d0f6834144d1f0ffb 13.5 KB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 43.75%
Windows Vista Home Premium 12.50%
Windows 7 Ultimate 12.50%
Windows Vista Home Basic 12.50%
Windows 8 6.25%
Windows 8 Pro 6.25%
Windows Vista Ultimate 6.25%

Distribution by countryDistribution by country

United States installs about 25.00% of Smartbar.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Hewlett-Packard 33.33%
Sony 22.22%
Toshiba 22.22%
Dell 22.22%
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