Should I block it?

No, this file is 100% safe to run.

Additional versions

1.0.6428.0	3.03%
1.0.6365.0	9.09%
1.0.6341.0	9.09%
1.0.6304.0	3.03%
1.0.6300.0	3.03%
1.0.6289.0	3.03%
1.0.6288.0	9.09%
1.0.6276.0	15.15%
1.0.6268.0	3.03%
1.0.6267.0	9.09%
1.0.6233.234	3.03%
1.0.6225.0	9.09%
1.0.6224.6	3.03%
1.0.6159.0	3.03%
1.0.6147.0	3.03%
1.0.6087.22	3.03%
1.0.6087.0	3.03%
1.0.6033.2	3.03%
1.0.5790.2	3.03%

Relationships

Parent process

services.exe (Services and Controller app by Microsoft)

Related files

PE file structure

Show functions

Import table

advapi32.dll

RegCloseKey, RegQueryValueExW, RegOpenKeyExW, RegSetValueExW, RegCreateKeyExW, RegEnumValueA, RegQueryInfoKeyA, CopySid, GetLengthSid, IsValidSid, LookupAccountNameA, GetUserNameA, StartServiceCtrlDispatcherA, ChangeServiceConfig2A, CloseServiceHandle, CreateServiceA, OpenSCManagerA, RegSetValueExA, RegCreateKeyA, DeleteService, QueryServiceStatus, ControlService, OpenServiceA, RegDeleteValueA, StartServiceA, RegisterServiceCtrlHandlerExA, SetServiceStatus, DeregisterEventSource, ReportEventA, RegisterEventSourceA, RegQueryValueExA, RegOpenKeyExA, RegDeleteKeyA, RegCreateKeyExA, RegNotifyChangeKeyValue, SetSecurityDescriptorDacl, InitializeSecurityDescriptor, InitiateSystemShutdownA, AdjustTokenPrivileges, LookupPrivilegeValueA, OpenProcessToken, RevertToSelf, CreateProcessAsUserA, DuplicateTokenEx

kernel32.dll

GetProcAddress, GetVersionExA, InterlockedDecrement, InitializeCriticalSection, LoadLibraryA, CloseHandle, DeleteCriticalSection, MultiByteToWideChar, SetEvent, GetCurrentThreadId, GetLocalTime, OutputDebugStringA, GetLastError, DebugBreak, GetModuleFileNameA, Sleep, GetModuleHandleA, SetConsoleCtrlHandler, LocalFree, FormatMessageA, GlobalFree, GlobalAlloc, GetStdHandle, AllocConsole, CallNamedPipeA, LeaveCriticalSection, EnterCriticalSection, ReleaseMutex, WaitForSingleObject, ResetEvent, WaitForMultipleObjects, lstrlenW, CreateThread, CreateEventA, DisconnectNamedPipe, FlushFileBuffers, WriteFile, ReadFile, ConnectNamedPipe, CreateNamedPipeA, ExitThread, GetUserDefaultUILanguage, GetUserDefaultLangID, GetSystemDefaultLangID, CopyFileA, DeleteFileA, GetCurrentProcess, WideCharToMultiByte, lstrlenA, FreeLibrary, CreateMutexA, LocalAlloc, CreateFileA, CreateFileW, DeviceIoControl, SetLastError, GetCurrentThread, SetThreadPriority, SetPriorityClass, GetThreadPriority, GetPriorityClass, ExpandEnvironmentStringsA, WTSGetActiveConsoleSessionId

msvcp60.dll

DllMain

msvcrt.dll

DllMain

ole32.dll

CoCreateInstance, CoInitialize, CoUninitialize

setupapi.dll

SetupDiGetDeviceRegistryPropertyA, SetupDiDestroyDeviceInfoList, SetupDiEnumDeviceInfo, SetupDiGetClassDevsExA, CM_Reenumerate_DevNode, CM_Locate_DevNodeA, SetupDiOpenDevRegKey, SetupDiGetDeviceInterfaceDetailW, SetupDiEnumDeviceInterfaces, SetupDiGetClassDevsA

shell32.dll

SHGetFolderPathA, SHFileOperationA

user32.dll

PostMessageA, UnregisterDeviceNotification, RegisterDeviceNotificationA, CreateWindowExA, DefWindowProcA, DestroyWindow, wsprintfA, RegisterClassA

winmm.dll

mixerMessage, mixerGetNumDevs

wtsapi32.dll

WTSQueryUserToken

STacSV.exe

IDT PC Audio by IDT

Remove STacSV.exe

Version:	1.0.6289.0
MD5:	d44d3387809eedb5564735ec27be700e
SHA1:	5791e5edaffbe1852b6aed0e5158130f51ed3f61
SHA256:	c7fa6c95e52247a84e586e8a3b38834092e7777a45860c1fc3f0480f29b76979

What is STacSV.exe?

IDT Audio Drivers are driver for audio devices installed within the PC. The drivers are distributed through the PC manufacture (OEM) directly.

Overview

stacsv.exe runs as a service under the name Audio Service (STacSV) with extensive SYSTEM privileges (full administrator access).

Details

File name:	stacsv.exe
Publisher:	IDT, Inc.
Product name:	IDT PC Audio
Typical file path:	C:\Program Files\idt\wdm\stacsv.exe
File version:	1.0.6289.0
Size:	232.08 KB (237,650 bytes)
Digital DNA
PE subsystem:	Windows Console
File packed:	No
Code language:	Microsoft Visual C++ 6.0
.NET CLR:	No

More details

Behaviors

Services

Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)

'STacSV' (Audio Service)
STacSV

Resource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)

Averages

CPU
Total CPU:	0.00031863%	0.028634%
Kernel CPU:	0.00016519%	0.013761%
User CPU:	0.00015344%	0.014873%
Kernel CPU time:	5,788 ms/min	100,923,805ms/min
Memory
Private memory:	10.19 MB	21.59 MB
Private (maximum):	4.52 MB
Private (minimum):	3.54 MB
Non-paged memory:	10.19 MB	21.59 MB
Virtual memory:	48.43 MB	140.96 MB
Virtual memory (peak):	52.43 MB	169.69 MB
Working set:	4.16 MB	18.61 MB
Working set (peak):	5.48 MB	37.95 MB
Resource allocations
Threads:	12	12
Handles:	174	600

Process properties

Integrety level:	System
Platform:	32-bit
Command line:	"C:\Program Files\idt\wdm\stacsv.exe"
Owner:	SYSTEM
Windows Service
Service name:	STacSV
Display name:	Audio Service
Description:	“Manages audio jack configurations.”
Type:	Win32OwnProcess
Parent process:	services.exe (Services and Controller app by Microsoft)

Threads

Averages

STacSV.exe (main module)
Total CPU:	0.00476511%	0.272967%
Kernel CPU:	0.00154473%	0.107585%
User CPU:	0.00322038%	0.165382%
CPU cycles:	134,799/sec	5,741,424/sec
Memory:	236 KB	1.16 MB
sechost.dll
Total CPU:	0.00027491%
Kernel CPU:	0.00014400%
User CPU:	0.00013091%
CPU cycles:	6,454/sec
Memory:	100 KB
MMDevApi.dll
Total CPU:	0.00006545%
Kernel CPU:	0.00003927%
User CPU:	0.00002618%
CPU cycles:	3,101/sec
Memory:	228 KB
ole32.dll
Total CPU:	0.00001309%
Kernel CPU:	0.00001309%
User CPU:	0.00000000%
CPU cycles:	178/sec
Memory:	1.36 MB

Common loaded modules

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

stapi32.dll (IDT PC Audio by IDT)

Distribution by Windows OS

OS version	distribution
Windows 7 Ultimate	33.33%
Windows 7 Professional	18.18%
Windows Vista Home Premium	12.12%
Microsoft Windows XP	12.12%
Windows 7 Enterprise	6.06%
Windows Vista Home Basic	6.06%
Windows 7 Home Premium	3.03%
Windows 8 Enterprise	3.03%
Windows 7 Starter	3.03%
Windows 8 Pro	3.03%

Distribution by country

United States installs about 24.24% of IDT PC Audio.

Distribution by PC manufacturer

PC Manufacturer	distribution
Hewlett-Packard	64.29%
Dell	14.29%
Acer	7.14%
Intel	7.14%
ASUS	7.14%

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