Should I block it?

60%
60% of PCs block this file from running.
Possible reason:
Performance resource utilization

Relationships

Parent process
Related files

PE structurePE file structure

Show functions
Import table
advapi32.dll
CryptEncrypt, RegOpenKeyExA, RegQueryValueExA, CryptDecrypt, CryptReleaseContext, CryptDeriveKey, CryptDestroyKey, CryptCreateHash, CryptHashData, CryptDestroyHash, CryptAcquireContextW, OpenProcessToken, DuplicateTokenEx, SetTokenInformation, CreateProcessAsUserW, ChangeServiceConfigW, ChangeServiceConfig2W, StartServiceCtrlDispatcherW, RegisterServiceCtrlHandlerW, ControlService, DeleteService, CreateServiceW, RegEnumKeyExW, OpenSCManagerW, OpenServiceW, CloseServiceHandle, SetServiceStatus, RegisterEventSourceW, ReportEventW, DeregisterEventSource, RegQueryInfoKeyW, RegSetValueExW, RegQueryValueExW, RegOpenKeyExW, RegCreateKeyExW, RegCloseKey, RegDeleteValueW, RegDeleteKeyW
imagehlp.dll
ImageEnumerateCertificates, ImageGetCertificateHeader, ImageGetCertificateData
kernel32.dll
LoadResource, FindResourceW, LoadLibraryExW, GetCommandLineW, DeleteFileW, LockResource, FindResourceExW, lstrlenA, WideCharToMultiByte, ReadFile, GetFileSize, CreateFileW, GetShortPathNameW, GetExitCodeProcess, TerminateProcess, CreateProcessW, OpenProcess, Process32NextW, ProcessIdToSessionId, Process32FirstW, CreateToolhelp32Snapshot, GetProcAddress, LoadLibraryW, GetVersionExW, IsBadReadPtr, FindClose, FindFirstFileW, GetFileAttributesW, CreateDirectoryExW, lstrcpyW, GetTempPathW, lstrcatW, RemoveDirectoryW, FindNextFileW, TryEnterCriticalSection, GetTickCount, DeleteTimerQueueTimer, CreateTimerQueueTimer, LoadLibraryA, CreateFileA, lstrcmpA, lstrcmpiA, DebugBreak, GetCurrentProcessId, QueryPerformanceCounter, GetCommandLineA, GetEnvironmentStringsW, FreeEnvironmentStringsW, GetEnvironmentStrings, FreeEnvironmentStringsA, SizeofResource, MultiByteToWideChar, FreeLibrary, SetEvent, InterlockedDecrement, InterlockedIncrement, CreateEventW, CreateThread, GetCurrentThreadId, GetModuleHandleW, Sleep, GetModuleFileNameW, WaitForSingleObject, CloseHandle, lstrcmpiW, GetLastError, RaiseException, lstrlenW, LeaveCriticalSection, EnterCriticalSection, DeleteCriticalSection, InitializeCriticalSection, GetUserDefaultLCID, EnumSystemLocalesA, IsValidLocale, GetLocaleInfoW, WriteConsoleA, GetConsoleOutputCP, WriteConsoleW, SetStdHandle, VirtualQuery, GetStringTypeW, SetEndOfFile, GetStringTypeA, GetCPInfo, LCMapStringW, SetFilePointer, FlushFileBuffers, GetConsoleMode, GetConsoleCP, GetStartupInfoA, GetFileType, SetHandleCount, IsValidCodePage, GetOEMCP, GetModuleFileNameA, GetStdHandle, WriteFile, HeapCreate, VirtualAlloc, VirtualFree, SetLastError, TlsFree, TlsSetValue, TlsAlloc, TlsGetValue, ExitProcess, LCMapStringA, GetStartupInfoW, DeleteFileA, MoveFileA, GetSystemTimeAsFileTime, IsDebuggerPresent, SetUnhandledExceptionFilter, UnhandledExceptionFilter, GetCurrentProcess, RtlUnwind, InterlockedCompareExchange, GetProcessHeap, HeapSize, HeapReAlloc, HeapFree, HeapAlloc, HeapDestroy, InterlockedExchange, GetACP, GetLocaleInfoA, GetThreadLocale, GetVersionExA, GetModuleHandleA
ole32.dll
CoTaskMemAlloc, CoTaskMemRealloc, CoInitializeSecurity, CoRevokeClassObject, CoRegisterClassObject, CoUninitialize, CoTaskMemFree, CoInitialize, StringFromGUID2, CoCreateInstance, CoCreateGuid, OleRun, CLSIDFromString, CoGetInterfaceAndReleaseStream, CoMarshalInterThreadInterfaceInStream, CoUnmarshalInterface
shell32.dll
SHGetPathFromIDListW, SHGetMalloc, SHGetSpecialFolderLocation
shlwapi.dll
StrRChrA
user32.dll
UnregisterClassA, LoadStringW, PostThreadMessageW, MessageBoxW, CharNextW, TranslateMessage, CharUpperW, DispatchMessageW, GetMessageW
winhttp.dll
WinHttpAddRequestHeaders, WinHttpOpenRequest, WinHttpConnect, WinHttpSendRequest, WinHttpQueryHeaders, WinHttpQueryDataAvailable, WinHttpReadData, WinHttpCloseHandle, WinHttpQueryOption, WinHttpSetOption, WinHttpCrackUrl, WinHttpReceiveResponse, WinHttpOpen

YahooAUService.exe

Yahoo! AutoUpdater by Yahoo! Inc. (Signed)

Remove YahooAUService.exe
Version:   1.0.0.53
MD5:   dd0042f0c3b606a6a8b92d49afb18ad6
SHA1:   74fbb38fa923a2db686a7492c2c8feb9a23a7be4
SHA256:   8d3be4c93d02af5f42ec46af598d6da40c61d467cb2fee5e222f9c1e7a84b852

What is YahooAUService.exe?

Yahoo! AutoUpdater is a Windows service which runs in the background of Windows and automatically starts up when your PC boots. It checks for software udpates and automatically downloads and installs them if found.

Overview

YahooAUService.exe runs as a service under the name YahooAUService (SYSTEM\CurrentControlSet\Services\YahooAUService) with extensive SYSTEM privileges (full administrator access). It is installed with a couple of know programs including Yahoo! Software Update published by Yahoo! Inc., Yahoo! Install Manager from Yahoo! Inc. and Yahoo! Install Manager by Yahoo! Inc.. The file is digitally signed by Yahoo! Inc. which was issued by the VeriSign certificate authority (CA).

DetailsDetails

File name:YahooAUService.exe
Publisher:Yahoo! Inc.
Product name:Yahoo! AutoUpdater
Description:AutoUpater Service Module
Typical file path:C:\Program Files\yahoo!\softwareupdate\yahooauservice.exe
File version:1.0.0.53
Size:588.27 KB (602,392 bytes)
Certificate
Issued to:Yahoo! Inc.
Authority (CA):VeriSign
Effective date:Thursday, August 10, 2006
Expiration date:Thursday, September 3, 2009
Digital DNA
Entropy:6.514367
File packed:No
.NET CLR:No
More details

ResourcesPrograms

The following programs will install this file
Acer Incorporated
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Office-Addin is part of the AcerCloud platform and is designed to integrate with Microsoft Office products (Word, PowerPoint and Excel) and to backup files to the cloud.
Martin v. Löwis
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Python is a dynamic object-oriented programming language that can be used for many kinds of software development. It offers strong support for integration with other languages and tools, comes with extensive standard libraries, and can be learned in a few days. Many Python programmers report substantial productivity gains and feel the language encourages the development of higher quality, more maintainable code.
Skype Technologies S.A.
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The video calling feature in Facebook powered by Skype is an in-browser Skype-based video chat which enables users to video conference their Facebook friends. Facebook provides users with two choices to initiate a call. You can choose someone from your online Facebook chat contacts and then hit the video button in the discussion window. Features: - Face-to-face video calls - Video call button at the top of the chat window - Add e...
Yahoo! Inc.
  54% remove
This update program is typically installed with the Yahoo Toolbar and designed to prompt users to install any released updates to the toolbar or other Yahoo! applications that the user has installed on their computer. Yahoo! Software Update is a program designed to manage all installed Yahoo programs on the user's PC and check for and update any new versions of the software if available. This service will run in the background when Wind...
Yahoo! Inc.
20% remove
Yahoo Install Manager manages Yahoo program downloads and installations. The install manager keeps track of such programs and assists in the installations to put things in their proper places.

BehaviorsBehaviors

Services
Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)
  • YahooAUService
  • 'YahooAUService' (Yahoo! Updater)

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00530030%
0.028634%
Kernel CPU:0.00355359%
0.013761%
User CPU:0.00174671%
0.014873%
Kernel CPU time:24,329 ms/min
100,923,805ms/min
User CPU time:0 ms/min
0 ms/min
CPU cycles:47,701/sec
17,470,203/sec
Memory
Private memory:3.99 MB
21.59 MB
Private (maximum):6.52 MB
Private (minimum):3.83 MB
Non-paged memory:3.99 MB
21.59 MB
Virtual memory:60.02 MB
140.96 MB
Virtual memory (peak):66.34 MB
169.69 MB
Working set:5.17 MB
18.61 MB
Working set (peak):9.68 MB
37.95 MB
Page faults:10,728/min
2,039/min
I/O
I/O read transfer:5.73 KB/sec
1.02 MB/min
I/O read operations:4/sec
343/min
I/O write transfer:34 Bytes/sec
274.99 KB/min
I/O write operations:1/sec
227/min
I/O other transfer:240 Bytes/sec
448.09 KB/min
I/O other operations:13/sec
1,671/min
Resource allocations
Threads:6
12
Handles:240
600
GUI GDI count:4
103
GUI USER count:5
49

BehaviorsProcess properties

Integrety level:System
Platform:32-bit
Command line:"C:\Program Files\yahoo!\softwareupdate\yahooauservice.exe"
Owner:SYSTEM
Windows Service
Service name:SYSTEM\CurrentControlSet\Services\YahooAUService
Display name:YahooAUService
Description:“Keeps your favorite Yahoo! software up-to-date with the latest features, tools, and enhancements.”
Type:Win32OwnProcess
Parent process:services.exe (Services and Controller app by Microsoft)

ResourcesThreads

Averages
 
wow64.dll
Total CPU:0.00435201%
0.272967%
Kernel CPU:0.00182016%
0.107585%
User CPU:0.00253185%
0.165382%
CPU cycles:114,454/sec
5,741,424/sec
Memory:252 KB
1.16 MB
sechost.dll
Total CPU:0.00328255%
Kernel CPU:0.00207416%
User CPU:0.00120840%
CPU cycles:66,627/sec
Memory:100 KB
ntdll.dll
Total CPU:0.00324999%
Kernel CPU:0.00106598%
User CPU:0.00218401%
Memory:704 KB
YahooAUService.exe (main module)
Total CPU:0.00273804%
Kernel CPU:0.00249482%
User CPU:0.00024322%
CPU cycles:45,964/sec
Memory:612 KB
ADVAPI32.dll
Total CPU:0.00239720%
Kernel CPU:0.00082197%
User CPU:0.00157523%
Memory:620 KB
wow64cpu.dll
Total CPU:0.00015107%
Kernel CPU:0.00015107%
User CPU:0.00000000%
CPU cycles:5,764/sec
Memory:32 KB

Common loaded modules

These are modules that are typiclaly loaded within the context of this process.

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 33.50%
Microsoft Windows XP 18.00%
Windows 7 Ultimate 14.50%
Windows Vista Home Premium 8.50%
Windows 8 6.00%
Windows 7 Professional 6.00%
Windows 8 Pro 4.50%
Windows Vista Home Basic 2.00%
Windows 8.1 1.50%
Windows 8 Pro with Media Center 1.50%
Windows 7 Starter 1.00%
Windows Vista Ultimate 1.00%
Windows 8 Single Language 1.00%
Windows 8 Enterprise N 0.50%
Windows Seven Black Edition 0.50%

Distribution by countryDistribution by country

United States installs about 63.82% of Yahoo! AutoUpdater.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 21.32%
Hewlett-Packard 20.96%
Toshiba 14.71%
ASUS 13.97%
Acer 10.66%
Intel 5.15%
Lenovo 3.68%
Sony 3.68%
GIGABYTE 1.47%
American Megatrends 1.47%
Samsung 1.10%
MSI 0.74%
Gateway 0.74%
Sahara 0.37%
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