Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 1.84%
6.2.9200.16384 (win8_rtm.120725-1247) 1.34%
6.2.9200.16384 (win8_rtm.120725-1247) 4.01%
6.1.7600.16385 (win7_rtm.090713-1255) 10.87%
6.1.7600.16385 (win7_rtm.090713-1255) 0.17%
6.1.7600.16385 (win7_rtm.090713-1255) 12.88%
6.1.7600.16385 (win7_rtm.090713-1255) 0.50%
6.0.6000.16386 (vista_rtm.061101-2205) 2.34%
6.0.6000.16386 (vista_rtm.061101-2205) 1.34%
6.0.6000.16386 (vista_rtm.061101-2205) 18.23%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 29.77%
5.1.2600.5512 (xpsp.080413-2113) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 1.67%
5.1.2600.5512 (xpsp.080413-2113) 0.33%
5.1.2600.5512 (xpsp.080413-2113) 1.51%
5.1.2600.5512 (xpsp.080413-2113) 0.33%
5.1.2600.5512 (xpsp.080413-2113) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 0.67%
5.1.2600.5512 (xpsp.080413-2113) 0.84%
5.1.2600.5512 (xpsp.080413-2113) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 0.33%
5.1.2600.5512 (xpsp.080413-2113) 1.00%
5.1.2600.3311 (xpsp.080212-0010) 0.33%
View more

Relationships

PE structurePE file structure
Show functions
Import table
advapi32.dll
SetTokenInformation, ImpersonateLoggedOnUser, CreateProcessAsUserW, RevertToSelf, RegisterServiceCtrlHandlerW, SetServiceStatus, OpenServiceW, DeleteService, OpenSCManagerW, CreateServiceW, CloseServiceHandle, ChangeServiceConfig2W, GetSecurityDescriptorDacl, GetAclInformation, GetLengthSid, InitializeAcl, GetAce, AddAccessAllowedAce, AddAce, InitializeSecurityDescriptor, EqualSid, GetTokenInformation, OpenThreadToken, AllocateAndInitializeSid, OpenProcessToken, SystemFunction041, SetSecurityDescriptorDacl, FreeSid, RegisterServiceCtrlHandlerExW, PrivilegeCheck, GetUserNameW
api-ms-win-service-core-l1-1-1.dll
SetServiceStatus, RegisterServiceCtrlHandlerExW
kernel32.dll
GetProcessHeap, LeaveCriticalSection, EnterCriticalSection, GetModuleHandleW, UnregisterWaitEx, DeleteCriticalSection, SetLastError, HeapAlloc, InitializeCriticalSection, GetQueuedCompletionStatus, TerminateProcess, RegisterWaitForSingleObject, QueueUserWorkItem, SetInformationJobObject, AssignProcessToJobObject, CreateJobObjectW, ResumeThread, GetCurrentProcess, ProcessIdToSessionId, OpenProcess, TerminateJobObject, DisableThreadLibraryCalls, QueryPerformanceCounter, GetTickCount, GetCurrentThreadId, GetCurrentProcessId, GetSystemTimeAsFileTime, UnhandledExceptionFilter, SetUnhandledExceptionFilter, LocalAlloc, LocalFree, HeapFree, ReadProcessMemory, DuplicateHandle, WriteProcessMemory, GetLastError, GetCurrentThread, CloseHandle, CreateIoCompletionPort, InterlockedCompareExchange, Sleep, InterlockedExchange, CreateEventW, UnregisterWait, SetEvent, UpdateProcThreadAttribute, InitializeProcThreadAttributeList, GetCurrentDirectoryW, ResolveDelayLoadedAPI, DelayLoadFailureHook
msvcrt.dll
DllMain
ntdll.dll
RtlInitString, RtlLengthSid, RtlAdjustPrivilege, NtQueryInformationProcess, RtlNtStatusToDosError, RtlInitUnicodeString, RtlSubAuthoritySid, RtlInitializeSid, RtlLengthRequiredSid, RtlCopySid, RtlAllocateAndInitializeSid, RtlSidDominates, RtlFreeSid, RtlQueryEnvironmentVariable, RtlSetEnvironmentVar
rpcrt4.dll
RpcRevertToSelfEx, I_RpcBindingIsClientLocal, RpcServerRegisterIfEx, RpcServerUseProtseqEpW, RpcServerUnregisterIf, RpcImpersonateClient, NdrServerCall2, RpcRaiseException
secur32.dll
LsaFreeReturnBuffer, LsaRegisterLogonProcess, LsaLookupAuthenticationPackage, LsaLogonUser, SeciFreeCallContext, SeciAllocateAndSetIPAddress, LsaDeregisterLogonProcess
user32.dll
LoadStringW, GetUserObjectSecurity, SetUserObjectSecurity
userenv.dll
UnloadUserProfile, DestroyEnvironmentBlock, LoadUserProfileW, CreateEnvironmentBlock
Export table
DllRegisterServer
DllUnregisterServer
SvcEntry_Seclogon
SvchostPushServiceGlobals

seclogon.dll

Secondary Logon Service DLL by Microsoft

Remove seclogon.dll
Version:   5.1.2600.5512 (xpsp.080413-2113)
MD5:   fceca7f90e5eb601be5fd8adff2a19c7
SHA1:   68bd2a84189ef58f76a1ac7d06025a68eadd0226
This is a Windows system installed file with Windows File Protection (WFP) enabled.

Overview

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

DetailsDetails

File name:seclogon.dll
Publisher:Microsoft Corporation
Product name:Secondary Logon Service DLL
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\seclogon.dll
Original name:SECLOGON.EXE
File version:5.1.2600.5512 (xpsp.080413-2113)
Product version:5.1.2600.5512
Size:18 KB (18,432 bytes)
Digital DNA
PE subsystem:Windows Console
File packed:No
Code language:Microsoft Visual C++
.NET CLR:No
More details

BehaviorsBehaviors

Hosted services
Runs as a shared service under the Windows svcHost
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'
  • Shared name is 'seclogon'

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 61.50%
Windows Vista Home Premium 19.00%
Windows Vista Home Basic 6.00%
Windows 8.1 Pro 3.00%
Windows Vista Business 3.00%
Windows 8.1 2.50%
Windows Vista Ultimate 1.50%
Windows 8 Pro 1.00%
Windows 7 Ultimate 1.00%
Windows 8 Enterprise Evaluation 0.50%
Windows 8 0.50%
Windows 8 Pro N 0.50%

Distribution by countryDistribution by country

United States installs about 52.36% of Secondary Logon Service DLL.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 34.57%
Hewlett-Packard 10.70%
Toshiba 10.70%
Intel 9.88%
Sony 5.76%
ASUS 4.12%
GIGABYTE 4.12%
Compaq 4.12%
Lenovo 3.29%
American Megatrends 3.29%
Gateway 3.29%
Acer 2.88%
Sahara 2.06%
Alienware 0.41%
Packard Bell 0.41%
Samsung 0.41%
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