Top 100 Windows API functions / DLLs observed (413 families, .NET excluded)

PosAPIOccurrencesDLLOccurrences
kernel32.dll!Sleep358 (86.68%)kernel32.dll392 (94.92%)
kernel32.dll!CloseHandle356 (86.20%)ntdll.dll379 (91.77%)
kernel32.dll!GetModuleHandle350 (84.75%)advapi32.dll331 (80.15%)
kernel32.dll!CreateFile344 (83.29%)user32.dll319 (77.24%)
kernel32.dll!WriteFile340 (82.32%)shell32.dll236 (57.14%)
kernel32.dll!GetProcAddress338 (81.84%)ws2_32.dll221 (53.51%)
kernel32.dll!GetModuleFileName335 (81.11%)wininet.dll171 (41.40%)
kernel32.dll!LoadLibrary326 (78.93%)ole32.dll162 (39.23%)
kernel32.dll!ExitProcess319 (77.24%)shlwapi.dll154 (37.29%)
kernel32.dll!ReadFile308 (74.58%)oleaut32.dll114 (27.60%)
kernel32.dll!GetCurrentProcess303 (73.37%)gdi32.dll106 (25.67%)
kernel32.dll!GetTickCount298 (72.15%)msvcrt.dll90 (21.79%)
ntdll.dll!RtlGetLastWin32Error297 (71.91%)crypt32.dll73 (17.68%)
kernel32.dll!WideCharToMultiByte284 (68.77%)iphlpapi.dll54 (13.08%)
ntdll.dll!RtlAllocateHeap281 (68.04%)psapi.dll51 (12.35%)
kernel32.dll!CreateThread278 (67.31%)netapi32.dll47 (11.38%)
kernel32.dll!MultiByteToWideChar275 (66.59%)urlmon.dll44 (10.65%)
kernel32.dll!TerminateProcess269 (65.13%)version.dll42 (10.17%)
kernel32.dll!GetCurrentProcessId265 (64.16%)mpr.dll37 ( 8.96%)
ntdll.dll!RtlLeaveCriticalSection260 (62.95%)winhttp.dll30 ( 7.26%)
ntdll.dll!RtlEnterCriticalSection260 (62.95%)GdiPlus.dll26 ( 6.30%)
kernel32.dll!GetCurrentThreadId258 (62.47%)dnsapi.dll23 ( 5.57%)
kernel32.dll!WaitForSingleObject258 (62.47%)secur32.dll22 ( 5.33%)
kernel32.dll!DeleteFile255 (61.74%)userenv.dll21 ( 5.08%)
advapi32.dll!RegCloseKey251 (60.77%)wtsapi32.dll20 ( 4.84%)
ntdll.dll!RtlFreeHeap244 (59.08%)wsock32.dll20 ( 4.84%)
kernel32.dll!GetCommandLine244 (59.08%)rpcrt4.dll19 ( 4.60%)
kernel32.dll!GetStartupInfo237 (57.38%)winmm.dll14 ( 3.39%)
ntdll.dll!RtlReAllocateHeap233 (56.42%)comctl32.dll14 ( 3.39%)
kernel32.dll!CreateProcess229 (55.45%)winspool.drv11 ( 2.66%)
ntdll.dll!RtlDeleteCriticalSection227 (54.96%)msvcp60.dll10 ( 2.42%)
kernel32.dll!SetFilePointer225 (54.48%)comdlg32.dll9 ( 2.18%)
kernel32.dll!UnhandledExceptionFilter221 (53.51%)setupapi.dll7 ( 1.69%)
advapi32.dll!RegOpenKeyEx220 (53.27%)uxtheme.dll6 ( 1.45%)
kernel32.dll!VirtualAlloc220 (53.27%)msimg32.dll5 ( 1.21%)
kernel32.dll!GetProcessHeap218 (52.78%)powrprof.dll5 ( 1.21%)
kernel32.dll!FindClose216 (52.30%)sspicli.dll4 ( 0.97%)
kernel32.dll!lstrlen215 (52.06%)mswsock.dll4 ( 0.97%)
advapi32.dll!RegQueryValueEx214 (51.82%)mfc42.dll4 ( 0.97%)
kernel32.dll!SetUnhandledExceptionFilter213 (51.57%)oleacc.dll4 ( 0.97%)
kernel32.dll!FindNextFile212 (51.33%)msacm32.dll3 ( 0.73%)
kernel32.dll!FindFirstFile212 (51.33%)msi.dll3 ( 0.73%)
kernel32.dll!GetVersionEx212 (51.33%)msvcr110.dll3 ( 0.73%)
kernel32.dll!QueryPerformanceCounter208 (50.36%)imagehlp.dll3 ( 0.73%)
advapi32.dll!RegSetValueEx208 (50.36%)atl.dll3 ( 0.73%)
kernel32.dll!VirtualFree206 (49.88%)msvcr100.dll2 ( 0.48%)
ws2_32.dll!WSAStartup203 (49.15%)msvcr120.dll2 ( 0.48%)
kernel32.dll!GetFileSize202 (48.91%)opengl32.dll2 ( 0.48%)
kernel32.dll!FlushFileBuffers201 (48.67%)sensapi.dll2 ( 0.48%)
kernel32.dll!GetStdHandle198 (47.94%)wldap32.dll2 ( 0.48%)
kernel32.dll!CreateMutex197 (47.70%)wintrust.dll2 ( 0.48%)
kernel32.dll!TlsGetValue197 (47.70%)Wldap32.dll2 ( 0.48%)
kernel32.dll!GetSystemTimeAsFileTime196 (47.46%)imm32.dll2 ( 0.48%)
kernel32.dll!FreeLibrary195 (47.22%)srvcli.dll1 ( 0.24%)
kernel32.dll!TlsSetValue194 (46.97%)dui70.dll1 ( 0.24%)
kernel32.dll!GetTempPath192 (46.49%)msvcr90.dll1 ( 0.24%)
kernel32.dll!GetACP189 (45.76%)clbcatq.dll1 ( 0.24%)
ntdll.dll!RtlUnwind186 (45.04%)samcli.dll1 ( 0.24%)
ntdll.dll!RtlSetLastWin32Error184 (44.55%)cfgmgr32.dll1 ( 0.24%)
kernel32.dll!LocalFree184 (44.55%)-0 ( 0.00%)
kernel32.dll!GetFileType182 (44.07%)-0 ( 0.00%)
kernel32.dll!GetCPInfo181 (43.83%)-0 ( 0.00%)
kernel32.dll!TlsAlloc179 (43.34%)-0 ( 0.00%)
ws2_32.dll!closesocket178 (43.10%)-0 ( 0.00%)
kernel32.dll!OpenProcess175 (42.37%)-0 ( 0.00%)
kernel32.dll!LCMapString174 (42.13%)-0 ( 0.00%)
ws2_32.dll!socket173 (41.89%)-0 ( 0.00%)
kernel32.dll!GetEnvironmentStrings173 (41.89%)-0 ( 0.00%)
kernel32.dll!FreeEnvironmentStrings172 (41.65%)-0 ( 0.00%)
kernel32.dll!TlsFree170 (41.16%)-0 ( 0.00%)
kernel32.dll!GetStringType170 (41.16%)-0 ( 0.00%)
kernel32.dll!GetFileAttributes169 (40.92%)-0 ( 0.00%)
kernel32.dll!RaiseException166 (40.19%)-0 ( 0.00%)
ws2_32.dll!connect166 (40.19%)-0 ( 0.00%)
ntdll.dll!RtlSizeHeap166 (40.19%)-0 ( 0.00%)
kernel32.dll!CreateEvent165 (39.95%)-0 ( 0.00%)
kernel32.dll!GetComputerName165 (39.95%)-0 ( 0.00%)
kernel32.dll!GetOEMCP164 (39.71%)-0 ( 0.00%)
kernel32.dll!IsDebuggerPresent161 (38.98%)-0 ( 0.00%)
advapi32.dll!OpenProcessToken157 (38.01%)-0 ( 0.00%)
ws2_32.dll!send157 (38.01%)-0 ( 0.00%)
kernel32.dll!CreateDirectory157 (38.01%)-0 ( 0.00%)
kernel32.dll!InterlockedDecrement157 (38.01%)-0 ( 0.00%)
ws2_32.dll!ntohs156 (37.77%)-0 ( 0.00%)
kernel32.dll!HeapCreate155 (37.53%)-0 ( 0.00%)
kernel32.dll!SetHandleCount154 (37.29%)-0 ( 0.00%)
kernel32.dll!InterlockedIncrement154 (37.29%)-0 ( 0.00%)
user32.dll!wsprintf152 (36.80%)-0 ( 0.00%)
kernel32.dll!InitializeCriticalSection151 (36.56%)-0 ( 0.00%)
ws2_32.dll!gethostbyname151 (36.56%)-0 ( 0.00%)
kernel32.dll!SetStdHandle148 (35.84%)-0 ( 0.00%)
wininet.dll!InternetOpen147 (35.59%)-0 ( 0.00%)
kernel32.dll!SetEvent147 (35.59%)-0 ( 0.00%)
kernel32.dll!CreateToolhelp32Snapshot146 (35.35%)-0 ( 0.00%)
kernel32.dll!SetEndOfFile145 (35.11%)-0 ( 0.00%)
wininet.dll!InternetCloseHandle144 (34.87%)-0 ( 0.00%)
kernel32.dll!Process32Next143 (34.62%)-0 ( 0.00%)
kernel32.dll!lstrcpy142 (34.38%)-0 ( 0.00%)
kernel32.dll!Process32First141 (34.14%)-0 ( 0.00%)
kernel32.dll!IsValidCodePage140 (33.90%)-0 ( 0.00%)

Occurrence Frequencies per Family (413 families, .NET excluded)

 API functionsDLLs
min 0.00 0.00
25%84.33 5.88
50%122.00 8.00
75%188.0010.83
max592.0024.00
mean147.96 8.31
Total Observed3713.0059.00