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

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:	1.0.6033.2
MD5:	8d0d9319e2c35cae04565da6cf1b4299
SHA1:	ce60a1597f949fe4bf9e74d6413e1f76bea9aace
SHA256:	22869d8b3ce9449f0987aafbb0355ec441795a94c5c32dc6de87f40b2438c619

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:	1.0.6033.2
Size:	216.09 KB (221,273 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:	0.00136331%	0.028634%
Kernel CPU:	0.00026466%	0.013761%
User CPU:	0.00109866%	0.014873%
Kernel CPU time:	23,151 ms/min	100,923,805ms/min
CPU cycles:	3,834,033/sec	17,470,203/sec
Memory
Private memory:	8.11 MB	21.59 MB
Private (maximum):	1.01 MB
Private (minimum):	792 KB
Non-paged memory:	8.11 MB	21.59 MB
Virtual memory:	50.38 MB	140.96 MB
Virtual memory (peak):	55.38 MB	169.69 MB
Working set:	908 KB	18.61 MB
Working set (peak):	6.26 MB	37.95 MB
Page faults:	1,946/min	2,039/min
I/O
I/O read transfer:	6 Bytes/sec	1.02 MB/min
I/O read operations:	1/sec	343/min
I/O write transfer:	2 Bytes/sec	274.99 KB/min
I/O write operations:	1/sec	227/min
I/O other transfer:	15.23 KB/sec	448.09 KB/min
I/O other operations:	3,019/sec	1,671/min
Resource allocations
Threads:	9	12
Handles:	162	600

Process properties

Integrety level:	System
Platform:	32-bit
Command line:	C:\Windows\System32\driverstore\filerepository\stwrt.inf_2311653e\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:	0.03920801%	0.272967%
Kernel CPU:	0.03410196%	0.107585%
User CPU:	0.00510605%	0.165382%
CPU cycles:	1,033,021/sec	5,741,424/sec
Memory:	216 KB	1.16 MB
ADVAPI32.dll
Total CPU:	0.00048518%
Kernel CPU:	0.00034656%
User CPU:	0.00013862%
CPU cycles:	14,443/sec
Memory:	792 KB
ole32.dll
Total CPU:	0.00006931%
Kernel CPU:	0.00000000%
User CPU:	0.00006931%
CPU cycles:	607/sec
Memory:	1.27 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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