Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

3, 0, 0, 1 0.95%
02.29.73.00 0.95%
02.29.19.83 1.90%
02.27.14.88 0.95%
02.25.32.45 11.43%
02.19.72.18 0.95%
02.13.04.49 2.86%
02.05.76.03 0.95%
02.04.35.50 1.90%
01.99.34.95 1.90%
01.97.82.80 5.71%
01.94.20.38 2.86%
01.89.86.91 1.90%
01.88.56.76 1.90%
01.82.67.49 1.90%
01.78.87.58 11.43%
01.74.87.19 0.95%
01.71.93.25 0.95%
01.71.49.02 0.95%
01.70.46.67 1.90%
01.68.04.89 4.76%
01.68.03.24 0.95%
01.67.20.08 0.95%
01.67.01.96 0.95%
01.64.55.98 0.95%
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Relationships

PE structurePE file structure
Show functions
Import table
kernel32.dll
RaiseException, UnhandledExceptionFilter, SetUnhandledExceptionFilter, IsDebuggerPresent, TerminateProcess, GetCurrentProcess, GetDriveTypeW, GetCurrentThreadId, GetModuleFileNameA, VirtualQuery, HeapAlloc, GetProcessHeap, GetVersionExA, FoldStringW, IsBadStringPtrA, WideCharToMultiByte, MultiByteToWideChar, GetProcAddress, ReadFile, CloseHandle, FlushFileBuffers, WriteFile, GetLastError, CreateFileW, SetEndOfFile, SetFilePointer, LoadLibraryW, GetModuleHandleW, LeaveCriticalSection, EnterCriticalSection, GetFullPathNameA, SetEnvironmentVariableA, HeapFree, WriteConsoleW, CreateFileA, GetConsoleMode, GetConsoleCP, SetStdHandle, GetCurrentProcessId, GetTickCount, QueryPerformanceCounter, GetEnvironmentStringsW, FreeEnvironmentStringsW, GetCurrentDirectoryW, GetStringTypeW, LCMapStringW, ExitProcess, SetLastError, TlsFree, GetCurrentDirectoryA, TlsSetValue, TlsGetValue, TlsAlloc, IsValidCodePage, GetOEMCP, GetACP, InterlockedDecrement, InterlockedIncrement, GetCPInfo, IsProcessorFeaturePresent, DeleteCriticalSection, GetStartupInfoW, GetFileType, InitializeCriticalSectionAndSpinCount, SetHandleCount, GetModuleFileNameW, GetStdHandle, GetCommandLineA, GetSystemTimeAsFileTime, GetFullPathNameW, SetCurrentDirectoryA, RtlUnwind
tier0_s.dll
Plat_OutputDebugStringRaw, ThreadGetCurrentProcessId, g_ulLastCycleSample, g_cBadCycleCountReceived, Is64BitOS, WriteMiniDump, Plat_ExitProcess, g_dwDllEntryThreadId, Plat_OutputDebugString, Warning, Msg, Plat_IsInDebugSession, g_VProfile, CreateVProfile, g_VProfManager, Plat_GetCommandLine, _DMsg, g_pMemAllocSteam, Error, AssertMsgImplementation, ThreadGetCurrentReference, ThreadGetCurrentRunningRef
user32.dll
CharLowerBuffW
Export table
_Q_atoi64
_Q_memcmp
_Q_memcpy
_Q_memmove
_Q_memset
_Q_strcmp
_Q_strcspn
_Q_stricmp
_Q_strlen
_Q_strlower
_Q_strpbrk
_Q_strrchr
_Q_strstr
_Q_strupr
_Q_wcscmp
_Q_wcslen
_Q_wcslower
_Q_wcsupr
_Q_wtoi
_Q_wtoi64
BHanIdeograph
CanBeginLine
CanBreakBetween
CanBreakRepeated
CanEndLine
CommandLine
Coroutine_Cancel
Coroutine_Continue
Coroutine_Create
Coroutine_DebugBreak
Coroutine_GetCurrentlyActive
Coroutine_GetStackDepth
Coroutine_IsActive
Coroutine_IsAddressInOurStack
Coroutine_ReleaseThreadMemory
Coroutine_Test
Coroutine_ValidateGlobals
Coroutine_YieldToMain
CreateInterface
DebugStatsSystem
GetNameFromOSType
GetOSDetailString
GetOSType
GetPlatformFromOS
GetPlatformName
GetPlatformNameFromEPlatformType
GetPortableOsVersionInformation
InstallUniformRandomStream
isbreakablewspace
KeyValuesSystemSteam
OSTypesAreCompatible
Q_AggressiveStripPrecedingAndTrailingWhitespace
Q_AggressiveStripPrecedingAndTrailingWhitespaceW
Q_AppendParamToURL
Q_AppendSlash
Q_atof
Q_atoi
Q_BasicHtmlEntityEncode
Q_binarytohex
Q_CbMakeAbsolutePath
Q_ComposeFileName
Q_CopyAndFixSlashes
Q_CP437CharsToUTF8
Q_DefaultExtension
Q_ExtractDomainFromURL
Q_ExtractFileExtension
Q_ExtractFilePath
Q_FileBase
Q_FixSlashes
Q_FormatAndAppend
Q_FormatAndAppendTail
Q_FormatAndAppendV
Q_GetFileExtension
Q_hextobinary
Q_HtmlEntityDecodeToUTF8
Q_IsAbsolutePath
Q_IsDeprecatedW
Q_IsMeanSpaceW
Q_isnumeric
Q_isstrlower
Q_isvalidhex
Q_IsValidUChar32
Q_JoinNumbers
Q_LocaleSpecificANSIToUTF8
Q_MakeAbsolutePath
Q_MatchWildcardDNSName
Q_MatchWildcardString
Q_NormalizeUTF8
Q_NormalizeUTF8Old
Q_pretifymem
Q_pretifynum
Q_qsort_s
Q_RemoveDotSlashes
Q_ReplaceBadFilenameCharacters
Q_ReplaceBadFilenameCharactersInPlace
Q_SetExtension
Q_SetURLParam
Q_snprintf
Q_snwprintf
Q_SplitNumbers
Q_SplitString
Q_SplitString2
Q_strcat
Q_strcmp_prefix
Q_stricmp_prefix
Q_StripAndPreserveHTML
Q_StripBBCode
Q_StripExtension
Q_StripFilename
Q_StripHTML
Q_StripLastDir
Q_StripPrecedingAndTrailingWhitespace
Q_StripPrecedingAndTrailingWhitespaceW
Q_StripTrailingSlash
Q_StripUnprintable
Q_StripUnprintableW
Q_stristr
Q_StrLeft
Q_strnappend
Q_strnappend_strlen
Q_strncat
Q_strnchr
Q_strncmp
Q_strncpy
Q_strnicmp
Q_strnistr
Q_strnlen
Q_StrReplaceChar
Q_StrRight
Q_strristr
Q_StrSlice
Q_StrSubst
Q_StrSubstInPlace
Q_strtoi64
Q_strtoui64
Q_StrTrim
Q_tolower
Q_toupper
Q_UChar32ToUTF16
Q_UChar32ToUTF16Len
Q_UChar32ToUTF8
Q_UChar32ToUTF8Len
Q_UnqualifiedFileName
Q_URLContainsDomain
Q_URLCracker
Q_URLDecode
Q_URLDecodeRaw
Q_URLEncode
Q_URLEncodeRaw
Q_UTF16CharsToUTF32
Q_UTF16CharsToUTF8
Q_UTF16ToUChar32
Q_UTF16ToUTF32
Q_UTF16ToUTF8
Q_UTF32CharsToUTF16
Q_UTF32CharsToUTF8
Q_UTF32ToUTF16
Q_UTF32ToUTF8
Q_UTF8CharsToUTF16
Q_UTF8CharsToUTF32
Q_UTF8ToUChar32
Q_UTF8ToUTF16
Q_UTF8ToUTF32
Q_vsnprintf
Q_vsnprintfRet
Q_vsnwprintf
Q_wcscat
Q_wcslower
Q_wcsncat
Q_wcsncpy
Q_wcsnicmp
Q_wcstoi64
Q_wcstoui64
Q_wcsupr
Q_whextobinary
Q_Windows1252CharsToUTF8
RandomChar
RandomFillMemory
RandomFloat
RandomGaussianFloat
RandomInt
RandomSeed
RandomUint32
StringAfterPrefix
StringAfterPrefixCaseSensitive
StringHasSuffix
V_FixDoubleSlashes
V_FixupPathName
V_GetCurrentDirectory
V_MakeRelativePath
V_SetCurrentDirectory
V_TruncateAbsolutePathToDiskIdentity
VStdLib_GetICVarFactory
vstdlib_wcsicmp
vstdlib_wcsnicmp
WeakRandomChar
WeakRandomFillMemory
WeakRandomFloat
WeakRandomGaussianFloat
WeakRandomInt
WeakRandomSeed
WeakRandomUint32

vstdlib_s.dll

Steam by Valve (Signed)

Remove vstdlib_s.dll
Version:   02.19.72.18
MD5:   a4ba96cc5fa4ee343bff348fc89cfd2f
SHA1:   eb5d0be84925a79ae88d5ab299e2143ec7427c3c

What is vstdlib_s.dll?

Steam is a digital distribution, digital rights management, multiplayer platform developed by Valve. It is used to distribute games and related media online. Steam's primary service is to allow its users to download games and other software that they have in their virtual software library to their local computers. Steam provides digital rights management (DRM) for software titles, by providing "custom executable generation" for executable files that are unique for each user.

About vstdlib_s.dll (from Valve)

“We have over 2,000 games from Action to Indie and everything in-between. Enjoy exclusive deals, automatic game updates and other great perks. Meet new people, join game groups, form clans, chat in-gam”

DetailsDetails

File name:vstdlib_s.dll
Publisher:Valve Corporation
Product name:Steam
Description:vstdlib_ s.dll (buildbot_winslave01_steam_rel_client_win32@winslave01)
Typical file path:C:\Program Files\steam\vstdlib_s.dll
Original name:vstdlib_ s.dll
File version:02.19.72.18
Product version:03.00.00.01
Size:229.19 KB (234,688 bytes)
Build date:4/24/2014 6:48 AM
Certificate
Issued to:Valve
Authority (CA):VeriSign
Effective date:Tuesday, November 24, 2009
Expiration date:Friday, November 23, 2012
Digital DNA
Entropy:6.801267
File packed:No
.NET CLR:No
More details

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Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 39.05%
Windows 7 Ultimate 15.24%
Windows 8 Pro 13.33%
Windows 8 8.57%
Windows 7 Professional 6.67%
Windows 8.1 2.86%
Windows 8 Pro with Media Center 2.86%
Windows 8.1 Pro with Media Center 1.90%
Windows Vista Ultimate 1.90%
Windows 7 Home Basic 1.90%
Windows 8.1 Pro 0.95%
Windows 8.1 Single Language 0.95%
Windows 8 Single Language 0.95%
Microsoft Windows XP 0.95%
Windows 8 Enterprise 0.95%
Windows Vista Home Premium 0.95%

Distribution by countryDistribution by country

United States installs about 41.75% of Steam.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
ASUS 22.54%
Hewlett-Packard 22.54%
Lenovo 11.27%
Dell 11.27%
Acer 8.45%
Sony 5.63%
Toshiba 5.63%
Alienware 2.82%
American Megatrends 2.82%
MSI 2.82%
Sahara 1.41%
GIGABYTE 1.41%
Samsung 1.41%
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