Should I block it?

98%
Yes, 98% block recommendation.
Possible reason:
Performance resource utilization

VersionsAdditional versions

2014, 3, 18, 02 0.25%
2014, 2, 12, 01 0.08%
2013, 11, 19, 02 0.33%
2013, 8, 7, 02 5.40%
2013, 7, 11, 01 1.75%
2013, 6, 26, 01 0.50%
2013, 5, 29, 01 0.33%
2013, 5, 11, 01 0.83%
2013, 5, 2, 01 1.83%
2013, 4, 2, 01 8.06%
2013, 2, 7, 01 1.00%
2012, 11, 26, 02 14.13%
2012, 6, 12, 01 19.78%
2012, 3, 21, 01 16.13%
2012, 1, 12, 01 4.32%
2011, 12, 9, 01 0.08%
2011, 11, 18, 01 0.08%
2011, 11, 2, 01 1.33%
2011, 10, 6, 01 2.24%
2011, 9, 25, 01 0.08%
2011, 7, 21, 01 0.08%
2011, 6, 8, 01 0.58%
2011, 3, 16, 01 1.75%
2011, 1, 21, 02 0.08%
2010, 3, 23, 01 0.08%
View more

Relationships


PE structurePE file structure

Show functions
Import table
advapi32.dll
RegCloseKey, RegQueryInfoKeyA, RegEnumKeyExA, RegOpenKeyExA, RegCreateKeyExA, RegSetValueExA, RegDeleteValueA, RegDeleteKeyA, RegEnumValueA, RegQueryValueExA, RegCreateKeyA, GetUserNameA, RegNotifyChangeKeyValue, UnregisterTraceGuids, GetUserNameW, RegCreateKeyW, CryptDeriveKey, CryptAcquireContextA, CryptDecrypt, CryptEncrypt, CryptImportKey, CryptVerifySignatureW, CryptDestroyHash, CryptGetHashParam, CryptSignHashW, CryptHashData, CryptCreateHash, CryptReleaseContext, CryptDestroyKey, CryptAcquireContextW, RegDeleteKeyW, RegEnumValueW, GetTraceLoggerHandle, GetTraceEnableFlags, GetTraceEnableLevel, TraceEvent, RegQueryInfoKeyW, RegEnumKeyExW, RegOpenKeyExW, RegSetValueExW, RegCreateKeyExW, RegDeleteValueW, RegQueryValueExW, RegisterTraceGuidsW, RegFlushKey
comctl32.dll
ImageList_AddMasked, ImageList_Create, ImageList_Destroy
dnsapi.dll
DnsQuery_W, DnsQueryConfig, DnsRecordListFree
gdi32.dll
MoveToEx, LineTo, GetBkColor, SetDIBits, GetDeviceCaps, RestoreDC, DeleteDC, SetViewportOrgEx, SetWindowOrgEx, SetMapMode, SaveDC, CreatePenIndirect, CreateDCA, BitBlt, DeleteObject, CreateCompatibleDC, CreateCompatibleBitmap, SelectObject, CreateSolidBrush, GetObjectA, GetStockObject, CreateFontIndirectA, TextOutA, SetTextAlign, TranslateCharsetInfo, GetTextColor, SetBkMode, LPtoDP, GetObjectType, GetTextMetricsA, EnumFontFamiliesExA, CreateBitmap, SetTextColor, SetBkColor, SetStretchBltMode, StretchBlt, CreateBrushIndirect, CreatePen, Rectangle, CreateDIBSection, ExtCreateRegion, CombineRgn, CreateRectRgn, GetDIBits, CreateDCW, Polygon, FillRgn, CreateEllipticRgnIndirect, OffsetViewportOrgEx, SelectClipRgn, CreateRoundRectRgn, CreateRectRgnIndirect, RoundRect, GetPixel, EnumFontFamiliesExW, GetTextMetricsW, TextOutW, CreateFontIndirectW, GetObjectW, BeginPath, FrameRgn, SelectClipPath, EndPath, OffsetRgn, GetTextExtentPoint32A, CreatePolygonRgn, CreateFontA
imagehlp.dll
ImageGetCertificateHeader, ImageGetCertificateData, ImageEnumerateCertificates
iphlpapi.dll
GetAdaptersInfo
kernel32.dll
DllMain, SetUnhandledExceptionFilter, IsDebuggerPresent, GetModuleFileNameA, FindResourceExW, LockResource, WriteFile, lstrlenA, SetFilePointer, GetVersionExW, GetFileSize, ReadFile, GlobalAlloc, GlobalLock, WaitForMultipleObjects, CreateProcessW, GetACP, lstrcpynW, HeapAlloc, GetProcessHeap, HeapFree, HeapReAlloc, Sleep, GetThreadLocale, TlsAlloc, TlsFree, SetThreadLocale, GetComputerNameW, FindFirstFileW, FindNextFileW, FindClose, IsBadStringPtrW, TlsSetValue, CopyFileW, LocalAlloc, LocalFree, CreateDirectoryW, GlobalUnlock, OpenFileMappingW, CreateFileMappingW, MapViewOfFile, UnmapViewOfFile, GlobalGetAtomNameW, GlobalDeleteAtom, GlobalAddAtomW, GlobalFree, HeapCreate, GetFileAttributesExW, GetSystemTimeAsFileTime, CompareFileTime, FindFirstChangeNotificationW, FindCloseChangeNotification, CreateWaitableTimerW, SetWaitableTimer, CancelWaitableTimer, lstrcmpW, GetShortPathNameW, WinExec, SystemTimeToFileTime, GetComputerNameA, ResetEvent, CreateSemaphoreW, ReleaseSemaphore, GetFileAttributesW, SetFileTime, GlobalHandle, CreateFileW, GetSystemInfo, VirtualQuery, LoadLibraryW, WideCharToMultiByte, WaitForSingleObject, CreateMutexW, GetTickCount, SetEvent, GetExitCodeThread, SetThreadPriority, CreateThread, CreateEventW, CloseHandle, DeleteFileW, ExpandEnvironmentStringsW, InitializeCriticalSectionAndSpinCount, GetCurrentProcessId, DeleteCriticalSection, FlushInstructionCache, GetCurrentProcess, MulDiv, LeaveCriticalSection, EnterCriticalSection, GetModuleFileNameW, LoadLibraryExW, FindResourceW, LoadResource, lstrcmpA, lstrcmpiA, LoadLibraryA, CreateFileA, InterlockedCompareExchange, InterlockedPushEntrySList, IsProcessorFeaturePresent, VirtualFree, VirtualAlloc, InterlockedPopEntrySList, HeapDestroy, HeapSize, VirtualProtect, DecodePointer, EncodePointer, DeleteFileA, RtlUnwind, GetCommandLineA, SizeofResource, GetModuleHandleW, GetProcAddress, FreeLibrary, GetCurrentThreadId, GetLastError, SetLastError, lstrlenW, lstrcmpiW, MultiByteToWideChar, RaiseException, InterlockedDecrement, ReleaseMutex, InterlockedIncrement, TerminateProcess, UnhandledExceptionFilter, GetCPInfo, GetOEMCP, IsValidCodePage, ExitProcess, GetStdHandle, GetStringTypeW, LCMapStringW, GetConsoleCP, GetConsoleMode, GetTimeZoneInformation, SetHandleCount, GetFileType, GetStartupInfoW, FreeEnvironmentStringsW, GetEnvironmentStringsW, QueryPerformanceCounter, SetStdHandle, FlushFileBuffers, WriteConsoleW, SetEndOfFile, CompareStringW, SetEnvironmentVariableA, TlsGetValue, GetFileAttributesA, CreateWaitableTimerA, FindNextChangeNotification, FindFirstChangeNotificationA, IsBadStringPtrA, GlobalGetAtomNameA, GlobalAddAtomA, OpenFileMappingA, CreateMutexA, CreateDirectoryA, FindResourceA, IsDBCSLeadByte, RemoveDirectoryA, CopyFileA, GetWindowsDirectoryA, GetShortPathNameA, MoveFileExA, FindNextFileA, CreateProcessA, TryEnterCriticalSection, InitializeCriticalSection, CreateFileMappingA, CreateSemaphoreA, CreateEventA, FindFirstFileA, lstrcatA, lstrcpyA, GetPrivateProfileIntA, WritePrivateProfileStringA, GetVersionExA, IsBadWritePtr, GetThreadPriority, lstrcpynA, FindResourceExA, DebugBreak, OutputDebugStringA, GetModuleHandleA, LoadLibraryExA
msimg32.dll
AlphaBlend, GradientFill, TransparentBlt
msvcrt.dll
DllMain
netapi32.dll
Netbios
ole32.dll
CoMarshalInterThreadInterfaceInStream, CoTaskMemAlloc, CoCreateInstance, CoTaskMemFree, CoTaskMemRealloc, StringFromGUID2, CLSIDFromString, StringFromCLSID, CoInitializeEx, CoUninitialize, CreateStreamOnHGlobal, OleLockRunning, CoGetClassObject, OleUninitialize, CLSIDFromProgID, OleInitialize, CoCreateGuid, OleDraw, CoGetInterfaceAndReleaseStream, CoInitialize, RevokeDragDrop, ReleaseStgMedium, RegisterDragDrop
oleacc.dll
AccessibleObjectFromWindow, AccessibleChildren, LresultFromObject, CreateStdAccessibleObject, GetRoleTextW
setupapi.dll
SetupIterateCabinetA
shell32.dll
SHFileOperationA, ShellExecuteA, ShellExecuteExA, SHCreateDirectoryExW, SHFileOperationW, ShellExecuteW, SHGetFolderPathW, SHGetSpecialFolderPathW
shlwapi.dll
StrTrimA, StrStrIA, StrTrimW, UrlGetPartW, StrStrIW, PathFileExistsW, UrlHashW, StrRChrA, UrlCanonicalizeW, UrlCombineW
urlmon.dll
URLDownloadToCacheFileW, URLDownloadToFileW, UrlMkSetSessionOption, ObtainUserAgentString, FindMimeFromData, CoInternetGetSession
user32.dll
DllMain, VkKeyScanA, DispatchMessageA, TranslateMessage, RemovePropA, CallWindowProcA, DefWindowProcA, GetWindowLongW, GetPropA, RegisterWindowMessageA, GetDlgItem, IsWindowEnabled, GetUpdateRect, ValidateRect, IntersectRect, SetParent, LoadBitmapA, FindWindowA, SendMessageCallbackA, SetActiveWindow, GetActiveWindow, MapWindowPoints, GetCursorPos, GetDesktopWindow, TrackMouseEvent, FillRect, GetSysColor, DrawFrameControl, GetSystemMetrics, GetMenuItemInfoA, DestroyMenu, SetMenuItemInfoA, GetSysColorBrush, GetMenuItemCount, InsertMenuItemA, CreatePopupMenu, InflateRect, SetWindowRgn, EqualRect, TrackPopupMenu, EndDialog, GetMessageA, EnableWindow, IsIconic, EnumThreadWindows, EnumWindows, SetWindowTextA, GetWindowTextLengthA, CreateDialogParamA, ReleaseCapture, SetCapture, ClientToScreen, ScreenToClient, GetDlgCtrlID, CopyRect, TrackPopupMenuEx, DrawEdge, SetRectEmpty, PeekMessageA, IsDialogMessageA, AnimateWindow, RegisterClipboardFormatA, DeleteMenu, GetCapture, OpenClipboard, CloseClipboard, GetClipboardData, IsClipboardFormatAvailable, SetCursor, GetWindowLongA, SetWindowLongW, GetKeyState, SetPropA, SystemParametersInfoA, GetAsyncKeyState, DestroyWindow, GetClassInfoExA, LoadCursorA, RegisterClassExA, IsWindowUnicode, KillTimer, SetTimer, RedrawWindow, ShowWindow, InvalidateRect, EndPaint, BeginPaint, SetWindowPos, MoveWindow, SetFocus, CallWindowProcW, GetClientRect, SendMessageTimeoutA, IsWindowVisible, GetFocus, GetParent, IsChild, WindowFromPoint, PtInRect, mouse_event, SendMessageA, EnumChildWindows, GetClassNameA, MessageBoxA, UnhookWindowsHookEx, SetWindowsHookExA, GetWindowRect, CallNextHookEx, IsWindow, LoadStringA, SetWindowLongA, PostMessageA, CharLowerA, FindWindowExA, GetWindowThreadProcessId, CreateWindowExA, CharNextA, GetDC, ReleaseDC, DrawTextA, DrawTextW, OffsetRect, wsprintfA, LoadImageA
version.dll
GetFileVersionInfoSizeA, GetFileVersionInfoA, VerQueryValueW
wininet.dll
InternetCrackUrlA, InternetOpenA, InternetConnectA, HttpOpenRequestA, HttpSendRequestA, InternetQueryOptionA, InternetSetOptionA, InternetOpenUrlA, HttpQueryInfoA, InternetGetCookieA, InternetSetCookieA, InternetCrackUrlW, InternetReadFile, UnlockUrlCacheEntryStream, ReadUrlCacheEntryStream, RetrieveUrlCacheEntryStreamA, GetUrlCacheEntryInfoA, InternetCloseHandle, GetUrlCacheEntryInfoW, RetrieveUrlCacheEntryStreamW, InternetSetCookieW, DeleteUrlCacheEntryW, GetUrlCacheEntryInfoExW, HttpQueryInfoW, CommitUrlCacheEntryW, HttpSendRequestW, HttpOpenRequestW, InternetConnectW, InternetGetCookieW, InternetOpenW, InternetCheckConnectionW, InternetOpenUrlW, InternetSetOptionW, CreateUrlCacheEntryW, InternetQueryOptionW, FindCloseUrlCache, FindNextUrlCacheEntryW, FindFirstUrlCacheEntryW
winmm.dll
PlaySoundA
ws2_32.dll
WSALookupServiceNextA, WSALookupServiceBeginW, WSALookupServiceEnd
wtsapi32.dll
WTSUnRegisterSessionNotification, WTSRegisterSessionNotification
Export table
DllCanUnloadNow
DllCommand
DllGetClassObject
DllRegisterServer
DllUnregisterServer

yt.dll

Yahoo! Toolbar by Yahoo! Inc. (Signed)

Remove yt.dll
Version:   2011, 9, 25, 01
MD5:   c5fa99b865507ac7711d6ad42b971957
SHA1:   9c093acfc16b6e76de7613e25b8443b4fdba2f97

What is yt.dll?

Yahoo! Toolbar is a toolbar that installs on the Internet Explorer and Firefox browsers, within the context of internet access functions. It allows access to several functions, including Yahoo! Search and Yahoo! Mail. Several additional features are available on the Internet Explorer version.

About yt.dll (from Yahoo! Inc.)

Yahoo! Toolbar is included in the typical install when downloading Yahoo! Messenger or various other Yahoo! free products. Yahoo! Toolbar allows you to check if your friends are online and change your

DetailsDetails

File name:yt.dll
Publisher:Yahoo! Inc.
Product name:Yahoo! Toolbar
Typical file path:C:\Program Files\yahoo!\companion\installs\cpn\yt.dll
File version:2011, 9, 25, 01
Product version:8, 3, 11, 4
Size:1.33 MB (1,391,416 bytes)
Build date:9/24/2011 10:38 PM
Certificate
Issued to:Yahoo! Inc.
Authority (CA):VeriSign
Effective date:Thursday, August 10, 2006
Expiration date:Thursday, September 3, 2009
Digital DNA
PE subsystem:Windows GUI
File packed:No
Code language:Microsoft Visual C++
.NET CLR:No
More details

BehaviorsBehaviors

Internet Explorer Browser Helper Object
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects'
  • BHO CLSID: {02478D38-C3F9-4efb-9B51-7695ECA05670}
Internet Explorer toolbars
Located in the registry at 'SOFTWARE\Microsoft\Internet Explorer\Toolbar'
  • CLSID: {EF99BD32-C1FB-11D2-892F-0090271D4F88}
Safe for scripting controls
Marked as a safe ActiveX control for Internet Explorer (digitally signed with script execution permission)
  • Implemented as 'CLSID\{EF99BD32-C1FB-11D2-892F-0090271D4F88}\Implemented Categories\{7DD95801-9882-11CF-9FA9-00AA006C42C4}'
  • Implemented as 'CLSID\{02478D38-C3F9-4efb-9B51-7695ECA05670}\Implemented Categories\{7DD95801-9882-11CF-9FA9-00AA006C42C4}'
Safe for initializing controls
  • {EF99BD32-C1FB-11D2-892F-0090271D4F88}
  • {02478D38-C3F9-4efb-9B51-7695ECA05670}
Internet Explorer URL search hooks
  • CLSID: {EF99BD32-C1FB-11D2-892F-0090271D4F88}
  • CLSID: {81017EA9-9AA8-4A6A-9734-7AF40E7D593F}
Internet Explorer web browsers
Located in the registry at 'SOFTWARE\Microsoft\Internet Explorer\Toolbar\WebBrowser'
  • CLSID: {EF99BD32-C1FB-11D2-892F-0090271D4F88}

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 27.50%
Windows 7 Home Premium 20.50%
Windows 7 Ultimate 16.00%
Windows Vista Home Premium 13.00%
Windows 7 Professional 6.00%
Windows 8 Pro 5.50%
Windows Seven Black Edition 3.00%
Windows 8 2.50%
Windows 8.1 1.50%
Windows Vista Ultimate 1.50%
Windows 7 Starter 1.50%
Windows 8 Single Language 1.00%
Windows 8 Pro with Media Center 0.50%

Distribution by countryDistribution by country

United States installs about 47.15% of Yahoo! Toolbar.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Hewlett-Packard 22.71%
ASUS 20.09%
Dell 14.85%
Acer 13.54%
Toshiba 11.35%
GIGABYTE 5.68%
Sahara 3.06%
American Megatrends 3.06%
Lenovo 2.62%
Samsung 1.31%
Intel 0.87%
Sony 0.87%
Should I remove It? Clean your PC of unwanted adware, toolbars and bloatware.

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