Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

1.2.5 40.91%
1.2.5 51.52%
1.2.3.0 4.55%
1.2.3.0 3.03%

Relationships

PE structurePE file structure
Show functions
Import table
crtdll.dll
fputc, sprintf, free, malloc, strerror, fflush, _errno, fopen, fread, fprintf, _vsnprintf, fwrite, ftell, fseek, fclose, clearerr, _fdopen, rand, srand, time, _initterm
kernel32.dll
CreateFileA, SetFilePointer, WriteFile, ReadFile, GetLastError, CloseHandle, GlobalFree, GlobalAlloc, GetVersion, CreateFileW, HeapFree, HeapAlloc, GetSystemTimeAsFileTime, GetCurrentThreadId, GetCommandLineA, TerminateProcess, GetCurrentProcess, UnhandledExceptionFilter, SetUnhandledExceptionFilter, IsDebuggerPresent, HeapCreate, HeapDestroy, VirtualFree, DeleteCriticalSection, LeaveCriticalSection, EnterCriticalSection, VirtualAlloc, HeapReAlloc, GetModuleHandleW, Sleep, GetProcAddress, ExitProcess, GetStdHandle, GetModuleFileNameA, TlsGetValue, TlsAlloc, TlsSetValue, TlsFree, InterlockedIncrement, SetLastError, InterlockedDecrement, MultiByteToWideChar, SetHandleCount, GetFileType, GetStartupInfoA, RtlUnwind, WideCharToMultiByte, GetConsoleCP, GetConsoleMode, FreeEnvironmentStringsA, GetEnvironmentStrings, FreeEnvironmentStringsW, GetEnvironmentStringsW, QueryPerformanceCounter, GetTickCount, GetCurrentProcessId, GetCPInfo, GetACP, GetOEMCP, IsValidCodePage, InitializeCriticalSectionAndSpinCount, LoadLibraryA, SetStdHandle, FlushFileBuffers, WriteConsoleA, GetConsoleOutputCP, WriteConsoleW, LCMapStringA, LCMapStringW, GetStringTypeA, GetStringTypeW, GetLocaleInfoA, HeapSize, SetEndOfFile, GetProcessHeap, DisableThreadLibraryCalls, InterlockedCompareExchange, InterlockedExchange
msvcr90.dll
DllMain
Export table
adler32
adler32_combine
compress
compress2
compressBound
crc32
crc32_combine
deflate
deflateBound
deflateCopy
deflateEnd
deflateInit_
deflateInit2_
deflateParams
deflatePrime
deflateReset
deflateSetDictionary
deflateSetHeader
deflateTune
fill_win32_filefunc
fill_win32_filefunc64
fill_win32_filefunc64A
fill_win32_filefunc64W
get_crc_table
gzbuffer
gzclearerr
gzclose
gzclose_r
gzclose_w
gzdirect
gzdopen
gzeof
gzerror
gzflush
gzgetc
gzgets
gzoffset
gzopen
gzprintf
gzputc
gzputs
gzread
gzrewind
gzseek
gzsetparams
gztell
gzungetc
gzwrite
inflate
inflateBack
inflateBackEnd
inflateBackInit_
inflateCopy
inflateEnd
inflateGetHeader
inflateInit_
inflateInit2_
inflateMark
inflatePrime
inflateReset
inflateReset2
inflateSetDictionary
inflateSync
inflateSyncPoint
inflateUndermine
uncompress
unzClose
unzCloseCurrentFile
unzeof
unzGetCurrentFileInfo
unzGetCurrentFileInfo64
unzGetCurrentFileZStreamPos64
unzGetFilePos
unzGetFilePos64
unzGetGlobalComment
unzGetGlobalInfo
unzGetGlobalInfo64
unzGetLocalExtrafield
unzGoToFilePos
unzGoToFilePos64
unzGoToFirstFile
unzGoToNextFile
unzLocateFile
unzOpen
unzOpen2
unzOpen2_64
unzOpen64
unzOpenCurrentFile
unzOpenCurrentFile2
unzOpenCurrentFile3
unzOpenCurrentFilePassword
unzReadCurrentFile
unzStringFileNameCompare
unztell
unztell64
zError
zipClose
zipCloseFileInZip
zipCloseFileInZipRaw
zipCloseFileInZipRaw64
zipOpen
zipOpen2
zipOpen2_64
zipOpen64
zipOpenNewFileInZip
zipOpenNewFileInZip2
zipOpenNewFileInZip2_64
zipOpenNewFileInZip3
zipOpenNewFileInZip3_64
zipOpenNewFileInZip4_64
zipOpenNewFileInZip64
zipWriteInFileInZip
zlibCompileFlags
zlibVersion

zlibwapi.dll

ZLib.DLL by IObit Information Technology (Signed)

Remove zlibwapi.dll
Version:   1.2.3.0
MD5:   4efaa53c545f4ffb1ee0ed1709c15ea7
SHA1:   076b2d31e24fe8cfb56f9c292fd6ca1402be79b2
SHA256:   21582b3a68e8753322a1b1c7e550ae7fd305de4935de68fbde9f87570f484d00

What is zlibwapi.dll?

zlib is a common software library used for data compression. zlib compressed data is typically written with a gzip or a zlib wrapper. zlib is something of a de facto standard, to the point that zlib and DEFLATE are often used interchangeably in standards documents, with thousands of applications relying on it for compression, either directly or indirectly.

Overview

zlibwapi.dll is loaded as dynamic link library that runs in the context of a process. It is installed with a couple of know programs including Master Swift published by Omnesys Technologies Pvt. Ltd., Last.fm 1.5.4.27091 from Last.fm and Last.fm 1.5.4.27091 by Last.fm. The file is digitally signed by IObit Information Technology which was issued by the VeriSign certificate authority (CA).

DetailsDetails

File name:zlibwapi.dll
Product name:ZLib.DLL
Description:zlib data compression and ZIP file I/O library
Typical file path:C:\Program Files\iobit\iobit malware fighter\zlibwapi.dll
Original name:zlib.dll
File version:1.2.3.0
Size:72.5 KB (74,240 bytes)
Certificate
Issued to:IObit Information Technology
Authority (CA):VeriSign
Digital DNA
PE subsystem:Windows GUI
Entropy:6.655311
File packed:No
Code language:Microsoft Visual C++ 9.0
.NET CLR:No
More details

ResourcesPrograms

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Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 33.33%
Windows 7 Ultimate 22.73%
Microsoft Windows XP 18.18%
Windows 8 4.55%
Windows 8 Pro 4.55%
Windows 8.1 3.03%
Windows 7 Professional 3.03%
Windows Vista Home Premium 3.03%
Windows 8.1 Pro 1.52%
Windows 7 Home Basic 1.52%
Windows XP Professional 1.52%
Windows 7 Starter 1.52%
Windows 8 Single Language 1.52%

Distribution by countryDistribution by country

United States installs about 31.25% of ZLib.DLL.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 21.05%
Hewlett-Packard 14.04%
Acer 14.04%
ASUS 10.53%
Compaq 7.02%
Toshiba 7.02%
Gateway 7.02%
Lenovo 7.02%
American Megatrends 5.26%
Sony 3.51%
GIGABYTE 3.51%
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