Should I block it?

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

VersionsAdditional versions

1,2,4,1 90.00%
1,2,4,0 10.00%

Relationships

PE structurePE file structure
Show functions
Import table
advapi32.dll
RegOpenKeyExA, RegQueryValueExA, RegFlushKey, RegSetValueExA, RegCreateKeyExA, RegDeleteValueA, RegCloseKey
kernel32.dll
ResetEvent, WaitForSingleObject, SetEvent, lstrcmpA, ReleaseMutex, EnterCriticalSection, LeaveCriticalSection, DebugBreak, HeapAlloc, GetProcessHeap, HeapReAlloc, HeapFree, MultiByteToWideChar, WideCharToMultiByte, lstrlenW, GetCurrentProcessId, lstrcpyA, lstrcatA, GetCurrentThreadId, CompareStringA, GetModuleFileNameA, InterlockedDecrement, InterlockedIncrement, GetProcAddress, LoadLibraryExA, FreeLibrary, GetShortPathNameA, LocalFree, GetModuleHandleA, GetVersionExA, lstrcpynA, GetFileAttributesA, GetDriveTypeA, CreateFileMappingA, SetLastError, DuplicateHandle, GetCurrentProcess, OpenFileMappingA, MapViewOfFile, UnmapViewOfFile, lstrlenA, GetLastError, CreateEventA, CloseHandle, DeleteCriticalSection, InitializeCriticalSection, GetTickCount, CreateMutexA
ole32.dll
StringFromGUID2
user32.dll
EnumThreadWindows, CallNextHookEx, IsWindow, wsprintfA, GetKeyboardType, IsWindowVisible, GetWindowThreadProcessId, GetClassNameA, GetWindowTextLengthA, GetWindowTextA, EnumChildWindows, GetParent, DefWindowProcA
version.dll
GetFileVersionInfoSizeA, VerQueryValueA, GetFileVersionInfoA

mwsoestb.dll

My Web Search Bar for Internet Explorer, email clients, and messenger clients by Mindspark Interactive Network (Signed)

Remove mwsoestb.dll
Version:   1,2,4,0
MD5:   36b2b2dd0f18a36dfd1aa9bcfc9dda78
SHA1:   659fd0138e06a3dc7a10ecac0748e38e8edc9feb
SHA256:   40122e18ba119092cd5d1d58c9fcb925512d7dd7cdf2e3066b4822b6895299b0
Warning 15 antivirus scanners has detected malware.

What is mwsoestb.dll?

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 mwsoestb.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.”

Overview

MWSOESTB.DLL is malware that is loaded as dynamic link library that runs in the context of a process. The file is digitally signed by Mindspark Interactive Network.

DetailsDetails

File name:MWSOESTB.DLL
Publisher:MyWebSearch.com
Product name:My Web Search Bar for Internet Explorer, email clients, and messenger clients
Description:My Web Search Plugin Loader
Typical file path:C:\Program Files\MyWebSearch\bar\1.bin\MWSOESTB.DLL
File version:1,2,4,0
Product version:2,3,0,0
Size:44.08 KB (45,134 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, 15 of them detected the following malware.
Antivirus engineEngine versionDetection
AhnLab V3 Internet Security 2012.10.22 PUP/Win32.MyWebSearch
Antiy Labs AVL 2.0.3.7 WebToolbar/Win32.MyWebSearch.gen
avast! 6.0.1289.0 Win32:PUP-gen [PUP]
Clam AntiVirus 0.97.3.0 Adware.Mywebsearch-2
eSafe 7.0.17.0 Win32.MiscMywebsearc
ESET NOD32 7.7611 Win32/Toolbar.MyWebSearch
Fortinet 5.0.26.0 Riskware/MyWebSearch
F-Prot v6.4.6.5.141 W32/Mywebsearch.C.gen!Eldorado
Kaspersky 9.0.0.837 not-a-virus:WebToolbar.Win32.MyWebSearch.tzb
Kingsoft 2012.9.4.139 Win32.Adware.MyWebSearch.db.(kcloud)
eScan by MicroWorld 12.0.250.0 Win32/Toolbar.MyWebSearch (ES)
Rising Antivirus 24.32.04.01 Trojan.Win32.Generic.1262064B
SUPERAntiSpyware 5.6.0.1008 PUP.MyWebSearch
The Hacker None Adware/MyWebSearch
VIPRE Antivirus 13630 MyWebSearch Toolbar (not malicious)

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 44.44%
Windows 7 Ultimate N 44.44%
Windows 7 Ultimate 11.11%

Distribution by countryDistribution by country

United States installs about 50.00% of My Web Search Bar for Internet Explorer, email clients, and messenger clients.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
GIGABYTE 100.00%
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