Should I block it?

40%
40% of PCs block this file from running.
Possible reason:
Performance resource utilization

VersionsAdditional versions

1.0.0.1 2.70%
1.0.0.1 8.11%
1.0.0.1 2.70%
1.0.0.1 83.78%
1.0.0.1 2.70%
(Note, IObit Information Technology 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
RegQueryInfoKeyW, RegSetValueExW, RegDeleteValueW, RegDeleteKeyW, RegCreateKeyExW, RegOpenKeyExW, RegQueryValueExW, RegCloseKey, RegEnumKeyExW
kernel32.dll
LoadLibraryExW, SetThreadLocale, GetThreadLocale, GetVersion, OutputDebugStringW, HeapFree, HeapAlloc, GetDiskFreeSpaceExW, GetDriveTypeW, GlobalUnlock, GlobalLock, FindResourceW, CloseHandle, CreateFileW, WriteConsoleW, SetStdHandle, GetStringTypeW, LCMapStringW, LoadLibraryW, LoadResource, SizeofResource, MultiByteToWideChar, FreeLibrary, GetModuleFileNameW, lstrcmpiW, GetModuleHandleW, GetProcAddress, EnterCriticalSection, LeaveCriticalSection, lstrlenW, InterlockedDecrement, InterlockedIncrement, DeleteCriticalSection, InitializeCriticalSectionAndSpinCount, GetLastError, RaiseException, WritePrivateProfileStringW, GetVersionExW, GetPrivateProfileStringW, GetConsoleMode, GetConsoleCP, SetFilePointer, GetSystemTimeAsFileTime, FlushFileBuffers, GetCurrentProcessId, GetTickCount, QueryPerformanceCounter, GetEnvironmentStringsW, WideCharToMultiByte, FreeEnvironmentStringsW, GetModuleFileNameA, GetStartupInfoW, GetFileType, SetHandleCount, IsValidCodePage, GetOEMCP, RtlUnwind, EncodePointer, DecodePointer, GetCurrentThreadId, GetCommandLineA, IsProcessorFeaturePresent, UnhandledExceptionFilter, SetUnhandledExceptionFilter, IsDebuggerPresent, TerminateProcess, GetCurrentProcess, TlsAlloc, TlsGetValue, TlsSetValue, TlsFree, SetLastError, Sleep, HeapSize, ExitProcess, WriteFile, GetStdHandle, HeapCreate, HeapDestroy, HeapReAlloc, GetCPInfo, GetACP
ole32.dll
ReleaseStgMedium, StringFromGUID2, CoTaskMemFree, CoCreateInstance, CoTaskMemAlloc, CoTaskMemRealloc
shell32.dll
SHGetSpecialFolderPathW, ShellExecuteW, DragQueryFileW
user32.dll
InsertMenuItemW, LoadImageW, CharNextW
Export table
DllCanUnloadNow
DllGetClassObject
DllInstall
DllRegisterServer
DllUnregisterServer

IObitSmartDefragExtension.dll

Smart Defrag by IObit Information Technology (Signed)

Remove IObitSmartDefragExtension.dll
Version:   1.0.0.1
MD5:   84e8b979bbbdd23ad84e88fd12236306
SHA1:   75ae78219871284536df4ff085a8f367bd91185d

Overview

iobitsmartdefragextension.dll is loaded as dynamic link library that runs in the context of a process. This is typically installed with the program DRIVERfighter published by SPAMfighter ApS.. The file is digitally signed by IObit Information Technology which was issued by the VeriSign certificate authority (CA).

DetailsDetails

File name:iobitsmartdefragextension.dll
Publisher:IObit
Product name:Smart Defrag
Description:IObit Smart Defrag Extension
Typical file path:C:\Windows\System32\iobitsmartdefragextension.dll
File version:1.0.0.1
Size:125.28 KB (128,288 bytes)
Build date:1/8/2014 12:54 AM
Certificate
Issued to:IObit Information Technology
Authority (CA):VeriSign
Expiration date:Sunday, February 14, 2016
Digital DNA
PE subsystem:Windows GUI
File packed:No
.NET CLR:No
More details

ResourcesPrograms

The following program will install this file
SPAMfighter ApS.
45% remove
DRIVERfighter is typically bundled with 3rd party pay per install programs such as InstallIQ.

BehaviorsBehaviors

Context menu handlers
Located in '*\shellex\ContextMenuHandlers'
  • Name: 'SmartDefragExtension'
Approved shell extensions
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
  • 'IObitSmartDefrag Extension' with CLSID {189F1E63-33A7-404B-B2F6-8C76A452CC54}

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 40.54%
Windows 7 Ultimate 18.92%
Windows 8.1 13.51%
Windows 8.1 Pro with Media Center 8.11%
Windows 8.1 Pro 5.41%
Windows 7 Professional 5.41%
Windows 8 5.41%
Microsoft Windows XP 2.70%

Distribution by countryDistribution by country

United States installs about 62.16% of Smart Defrag.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 36.36%
Acer 22.73%
Hewlett-Packard 18.18%
Sony 9.09%
Toshiba 9.09%
ASUS 4.55%
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