Should I block it?

No, this file is 100% safe to run.

Additional versions

5.1.2600.5935 (xpsp_sp3_qfe.100211-1426)	12.90%
5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)	58.06%
5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)	3.23%
5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)	3.23%
5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)	3.23%
5.1.2600.5512 (xpsp.080413-0852)	6.45%
5.1.2600.3667 (xpsp_sp2_gdr.100211-1411)	3.23%
5.1.2600.2975 (xpsp.060816-0113)	3.23%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)	6.45%

Relationships

iphlpsvc.dll (Service that offers IPv6 connectivity over an IPv4 network. by Microsoft)

PE file structure

Show functions

Import table

advapi32.dll

CryptAcquireContextW, RegCloseKey, RegEnumKeyExW, RegOpenKeyExW, RegEnumValueW, RegisterServiceCtrlHandlerW, SetServiceStatus, RegQueryValueExW, CryptReleaseContext, CryptGenRandom

dnsapi.dll

DnsReplaceRecordSetW

iphlpapi.dll

GetAdaptersAddresses, GetAdaptersInfo, NotifyAddrChange, NotifyRouteChange

kernel32.dll

FreeLibrary, QueryPerformanceCounter, ExpandEnvironmentStringsW, SetUnhandledExceptionFilter, UnhandledExceptionFilter, GetCurrentProcess, TerminateProcess, GetCurrentProcessId, GetCurrentThreadId, GetSystemTimeAsFileTime, LoadLibraryW, MultiByteToWideChar, WideCharToMultiByte, GetLastError, HeapAlloc, HeapFree, CreateTimerQueue, InterlockedIncrement, InterlockedDecrement, RegisterWaitForSingleObject, CreateEventW, CloseHandle, UnregisterWait, DeleteTimerQueueTimer, DeleteTimerQueue, CreateTimerQueueTimer, ChangeTimerQueueTimer, ReleaseMutex, WaitForSingleObject, UnregisterWaitEx, Sleep, GetComputerNameExW, HeapReAlloc, CreateFileW, DeviceIoControl, GetTickCount, HeapDestroy, CreateMutexW, HeapCreate, DisableThreadLibraryCalls, BindIoCompletionCallback, ReadFile, WriteFile, InitializeCriticalSection, LeaveCriticalSection, EnterCriticalSection, InterlockedExchange, DeleteCriticalSection, QueueUserWorkItem, SetEvent, SetLastError, GetProcAddress

msvcrt.dll

DllMain

mswsock.dll

GetAcceptExSockaddrs, AcceptEx

ntdll.dll

RtlInitUnicodeString, RtlGUIDFromString, RtlStringFromGUID

ole32.dll

CoUninitialize, CoCreateInstance, CoInitializeEx, CoTaskMemFree

rtutils.dll

TracePrintfExW, TraceDeregisterW, RouterLogRegisterW, TraceRegisterExW, RouterLogDeregisterW

wmi.dll

WmiNotificationRegistrationW

ws2_32.dll

WSALookupServiceEnd, WSALookupServiceBeginW, WSAEventSelect, WSASendTo, WSALookupServiceNextW, WSARecvFrom, WSAAddressToStringA, WSAAddressToStringW, getaddrinfo, WSAStringToAddressA, freeaddrinfo, WSASocketW, WSAIoctl, getnameinfo

6to4svc.dll

Service that offers IPv6 connectivity over an IPv4 network. by Microsoft

Remove 6to4svc.dll

Version:	5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)
MD5:	d6ac495134feab30424e21cae6a9b415
SHA1:	345cfe44a3867eca4a94a8ae55bb1d3ecd659d82
SHA256:	83e7676f02838943cfe498d00461f939daff0a19255b340466c00af1aeb279d1

This is a Windows system installed file with Windows File Protection (WFP) enabled.

Overview

6to4svc.dll is loaded as dynamic link library that runs in the context of a process. This version is installed on Windows XP.

Details

File name:	6to4svc.dll
Publisher:	Microsoft Corporation
Product name:	Service that offers IPv6 connectivity over an IPv4 network.
Description:	Microsoft® Windows® Operating System
Typical file path:	C:\Windows\System32\6to4svc.dll
File version:	5.1.2600.5935 (xpsp_sp3_gdr.100211-1404)
Product version:	5.1.2600.5935
Size:	98.5 KB (100,864 bytes)
Digital DNA
PE subsystem:	Windows Console
File packed:	No
Code language:	Microsoft Visual C++
.NET CLR:	No