Should I block it?

98%
Yes, 98% block recommendation.
Possible reasons:
Multiple malware detections
Performance resource utilization

VersionsAdditional versions

1, 0, 0, 4 66.67%
1, 0, 0, 4 16.67%
1, 0, 0, 4 16.67%
(Note, Mindspark Interactive Network publishes each variation of this file with the same version, but the hashes are unique.)

Relationships

PE structurePE file structure
Show functions
Import table
advapi32.dll
RegSetValueExA, RegQueryValueExA, RegCloseKey, RegOpenKeyExA, RegCreateKeyExA, RegDeleteValueA, RegOpenKeyW, RegFlushKey
kernel32.dll
EnterCriticalSection, DeleteCriticalSection, GetCommandLineA, GetModuleFileNameA, InitializeCriticalSection, GetCurrentThreadId, WideCharToMultiByte, DebugBreak, HeapAlloc, GetProcessHeap, HeapReAlloc, HeapFree, GetProcAddress, lstrcatA, LeaveCriticalSection, GetDriveTypeA, lstrcpynA, FreeLibrary, CloseHandle, lstrcmpiW, OpenProcess, LoadLibraryA, LoadLibraryExA, LocalFree, LocalAlloc, CompareStringW, lstrlenW, lstrcatW, lstrcpyW, VirtualQuery, VirtualProtect, GetModuleHandleA, lstrcmpiA, IsBadReadPtr, GetVersionExA, lstrlenA, GetFileAttributesA, lstrcpyA
user32.dll
SetWindowsHookExA, UnhookWindowsHookEx, CallNextHookEx
version.dll
GetFileVersionInfoA, GetFileVersionInfoSizeA, VerQueryValueA

f3reghk.dll

My Web Search Bar for Internet Explorer and FireFox by Mindspark Interactive Network (Signed)

Remove f3reghk.dll
Version:   1, 0, 0, 4
MD5:   a4d7bab5aa82efcec9f5c4bf3fd07c43
SHA1:   4237464f4776c06cd923de52a06de2273965149f
SHA256:   26a92a77b1a9b048b8f1ce9092b03337191f49f07ab45ed308306ed2719ac90c
Warning 8 antivirus scanners has detected malware.

What is f3reghk.dll?

MyWebSearch IE Search Box Protector for My Web Search by the Mindspark Interactive Network is a browser toolbar, part of the Fun Web Products suite of potentially unwanted applications such as Smiley Central, Cursor Mania, Popular Screensavers and others. The toolbar provides access to search engine results and a 404 Error Redirector among other things to your browser. The My Web Search toolbar could slow down your PC and uses cookies to track your web surfing usage and habits.

About f3reghk.dll (from Mindspark Interactive Network)

“MyWebSearch brings together the most comprehensive collection of search tools available to provide you with the information you need when you need it.”

DetailsDetails

File name:F3REGHK.DLL
Publisher:MyWebSearch.com
Product name:My Web Search Bar for Internet Explorer and FireFox
Description:MyWebSearch IE Search Box Protector
Typical file path:C:\Program Files\MyWebSearch\bar\1.bin\F3REGHK.DLL
File version:1, 0, 0, 4
Product version:2, 3, 0, 0
Size:37.52 KB (38,424 bytes)
Certificate
Issued to:Mindspark Interactive Network
Digital DNA
PE subsystem:Windows GUI
File packed:No
.NET CLR:No
More details

MalwareMalware detections

Based on 40+ industry antivirus scanners, 8 of them detected the following malware.
Antivirus engineEngine versionDetection
avast! 6.0.1289.0 Win32:FunWeb-K [PUP]
AVG 2014.0.3629 AdInstaller.FunWeb
Clam AntiVirus 0.97.3.0 Suspect.Adware.MWS
Comodo Internet Security 11716 UnclassifiedMalware
Emsisoft Anti-Malware 5.1.0.11 Trojan.Win32.Toolbar.MyWebSearch.AMN!A2
NOD32 6948 a variant of Win32/Toolbar.MyWebSearch.I
Norman 6.08.03 W32/MyWebSearch.SQ
VIPRE Antivirus 11635 MyWebSearch.J (v) (not malicious)

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 50.00%
Windows 7 Ultimate N 33.33%
Windows 7 Ultimate 16.67%

Distribution by countryDistribution by country

United States installs about 66.67% of My Web Search Bar for Internet Explorer and FireFox.
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