Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

3.0.14.1.US.1 30.00%
2.0.20.1.US.1 70.00%

Relationships


PE structurePE file structure

Show functions
Import table
advapi32.dll
SetSecurityDescriptorDacl, InitializeSecurityDescriptor, AdjustTokenPrivileges, LookupPrivilegeValueA, OpenProcessToken, RegQueryInfoKeyA, SetServiceStatus, UnlockServiceDatabase, LockServiceDatabase, QueryServiceConfigA, RegDeleteValueA, RegisterServiceCtrlHandlerA, StartServiceCtrlDispatcherA, DeleteService, ControlService, QueryServiceStatus, StartServiceA, CloseServiceHandle, RegCreateKeyExA, RegSetValueExA, RegCloseKey, ChangeServiceConfigA, OpenServiceA, CreateServiceA, OpenSCManagerA, RegEnumKeyA, RegEnumKeyExA, RegEnumValueA, RegDeleteKeyA, RegOpenKeyA, RegQueryValueExA, RegOpenKeyExA
kernel32.dll
GetSystemTimeAsFileTime, ExitProcess, GetStartupInfoA, IsBadCodePtr, GetFileSize, SetFilePointer, TlsFree, TlsSetValue, TlsGetValue, GetLastError, CloseHandle, CreateEventA, SetEvent, WaitForSingleObject, GetExitCodeThread, TerminateThread, GetCurrentThreadId, ResetEvent, InitializeCriticalSection, GetVersionExA, LoadLibraryA, GetProcAddress, FreeLibrary, DeleteCriticalSection, lstrcpyA, CreateFileA, EnterCriticalSection, LeaveCriticalSection, SetThreadPriority, GetCurrentThread, DeviceIoControl, GetOverlappedResult, lstrlenA, lstrcmpiA, lstrcatA, GetTickCount, Sleep, lstrcpynA, GetModuleFileNameA, GetPrivateProfileIntA, lstrcmpA, CreateToolhelp32Snapshot, Process32First, Process32Next, Module32First, Module32Next, CreatePipe, GetSystemDirectoryA, GetWindowsDirectoryA, CreateProcessA, GetExitCodeProcess, ReadFile, GetModuleHandleA, QueryPerformanceFrequency, QueryPerformanceCounter, ClearCommError, PurgeComm, EscapeCommFunction, WriteFile, SetupComm, GetCommState, SetCommState, GetCommModemStatus, SetCommTimeouts, GetPrivateProfileStringA, WritePrivateProfileStringA, GetFileAttributesA, LocalFree, GetShortPathNameA, DeleteFileA, CreateMutexA, OpenFileMappingA, MapViewOfFile, CreateFileMappingA, ReleaseMutex, UnmapViewOfFile, WaitForMultipleObjects, SetLastError, FormatMessageA, GetCurrentProcess, DuplicateHandle, IsBadReadPtr, SetUnhandledExceptionFilter, VirtualQuery, IsBadWritePtr, GetDiskFreeSpaceExA, GlobalMemoryStatus, GetLongPathNameA, RaiseException, OpenEventA, OpenProcess, LocalAlloc, GetCurrentProcessId, GetEnvironmentVariableA, GlobalAlloc, GlobalFree, GetThreadContext, SuspendThread, ResumeThread, GetUserDefaultLangID, WideCharToMultiByte, OutputDebugStringA, GetVersion, CreateSemaphoreA, ReleaseSemaphore, OpenSemaphoreA, HeapAlloc, GetProcessHeap, HeapFree, InterlockedIncrement, InterlockedDecrement, InterlockedCompareExchange, InterlockedExchange, HeapCompact, SetProcessWorkingSetSize, MultiByteToWideChar, lstrlenW, GetSystemTime, TlsAlloc
msvcp71.dll
DllMain
msvcr71.dll
DllMain
setupapi.dll
SetupDiDestroyDeviceInfoList, SetupDiGetDeviceInstanceIdA, SetupDiEnumDeviceInfo, SetupDiGetClassDevsA
shell32.dll
Shell_NotifyIconA
tapi32.dll
lineGetDevCapsA, lineOpenA, lineGetMessage, lineGetNewCalls, lineGetCallInfoA, lineNegotiateAPIVersion, lineInitialize, lineOpen, lineMakeCall, lineGetID, lineGetDevCaps, lineInitializeExA, lineSetStatusMessages, lineGetDevConfigA, lineShutdown, lineClose, lineDrop, lineSetDevConfigA
user32.dll
GetDesktopWindow, GetWindow, FindWindowA, wsprintfA, GetWindowTextA, LoadStringA, RegisterClassA, DispatchMessageA, DefWindowProcA, PeekMessageA, CreateWindowExA, UnregisterClassA, DestroyWindow, GetMessageA, GetFocus, GetParent, SystemParametersInfoA, GetKeyState, TranslateMessage, SetTimer, KillTimer, SendMessageA, RegisterWindowMessageA, RegisterClassExA, PostMessageA, GetClassNameA
version.dll
GetFileVersionInfoA, VerQueryValueA, GetFileVersionInfoSizeA
winmm.dll
timeGetTime
ws2_32.dll
WSACloseEvent, WSASetEvent, WSAIoctl, WSAEnumNetworkEvents, WSAEventSelect, WSACreateEvent, WSAResetEvent, WSAWaitForMultipleEvents

AOLacsd.exe

AOL Connectivity Service by America Online (Signed)

Remove AOLacsd.exe
Version:   2.0.20.1.US.1
MD5:   8fa646f0e639d9a8c8b98e217d471dc0
SHA1:   f3cfe85affd8df406854b46168612daee8bdea40
SHA256:   7cf5c78c2a4f3650aae9b360bdb30b1b5cf916382154a01bbe911a39905ba5d2

What is AOLacsd.exe?

AOL Connectivity Service attempts to automatically restore yoru AOL connection should you lose it while online which negates having to go through the standard AOL procedure of signing back on manually.

About AOLacsd.exe (from America Online)

The AOL software uses ACS to connect to the AOL service.

Overview

AOLacsd.exe runs as a service under the name AOL Connectivity Service (SYSTEM\CurrentControlSet\Services\AOL ACS) with extensive SYSTEM privileges (full administrator access). It has been configured with a firewall exception which allows both inbound and outbound network communication without being blocked. This is typically installed with the program Trend Micro PC-cillin Internet Security 14 published by Trend Micro Inc.. The file is digitally signed by America Online which was issued by the VeriSign certificate authority (CA).

DetailsDetails

File name:AOLacsd.exe
Publisher:America Online, Inc.
Product name:AOL Connectivity Service
Typical file path:C:\Program Files\Common Files\AOL\ACS\AOLacsd.exe
File version:2.0.20.1.US.1
Size:1.08 MB (1,135,728 bytes)
Certificate
Issued to:America Online
Authority (CA):VeriSign
Effective date:Wednesday, October 22, 2003
Expiration date:Sunday, October 24, 2004
Digital DNA
PE subsystem:Windows GUI
Entropy:6.466474
File packed:No
Code language:Microsoft Visual C++ 7.1
.NET CLR:No
More details

ResourcesPrograms

The following program will install this file
Trend Micro Inc.
1% remove
Trend Micro PC-cillin Internet Security 14 provides advanced protection and privacy for your digital life - keeping you, your family, and your valuable digital files safe. It's designed to safeguard you on social networks like Facebook, Google+, and Twitter. Titanium Internet Security delivers a fastest protection against new web threats and also guards against identity theft. With Trend Micro, you can relax and enjoy your digital life ...

BehaviorsBehaviors

Services
Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)
  • 'AOL ACS' (AOL Connectivity Service)
Windows firewall allowed programs
Exceptions allow programs to access to the Internet through an outbound connections
  • Firewall exception for 'C:\Program Files\Common Files\AOL\ACS\AOLacsd.exe'

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00014314%
0.028634%
Kernel CPU:0.00007431%
0.013761%
User CPU:0.00006883%
0.014873%
Kernel CPU time:557 ms/min
100,923,805ms/min
Context switches:21/sec
284/sec
Memory
Private memory:4.16 MB
21.59 MB
Private (maximum):1.15 MB
Private (minimum):924 KB
Non-paged memory:4.16 MB
21.59 MB
Virtual memory:44.84 MB
140.96 MB
Virtual memory (peak):51.01 MB
169.69 MB
Working set:1.02 MB
18.61 MB
Working set (peak):5.44 MB
37.95 MB
Page faults:9,067/min
2,039/min
I/O
I/O read transfer:731 Bytes/sec
1.02 MB/min
I/O read operations:1/sec
343/min
I/O write transfer:284 Bytes/sec
274.99 KB/min
I/O write operations:1/sec
227/min
I/O other transfer:11 Bytes/sec
448.09 KB/min
I/O other operations:1/sec
1,671/min
Resource allocations
Threads:11
12
Handles:122
600
GUI GDI count:4
103
GUI USER count:2
49

BehaviorsProcess properties

Integrety level:Undefined
Platform:32-bit
Command lines:
  • C:\progra~1\common~1\aol\acs\aolacsd.exe
Owner:SYSTEM
Windows Service
Service name:SYSTEM\CurrentControlSet\Services\AOL ACS
Display name:AOL Connectivity Service
Type:Win32OwnProcess, InteractiveProcess
Parent process:services.exe (Services and Controller app by Microsoft)

ResourcesThreads

Averages
 
msvcr71.dll (Microsoft Visual Studio .NET by Microsoft)
Total CPU:0.00013118%
0.272967%
Kernel CPU:0.00005141%
0.107585%
User CPU:0.00007977%
0.165382%
Memory:344 KB
1.16 MB
advapi32.dll (Advanced Windows 32 Base API by Microsoft)
Total CPU:0.00001418%
Kernel CPU:0.00000709%
User CPU:0.00000709%
Memory:620 KB
AOLacsd.exe (main module)
Total CPU:0.00000709%
Kernel CPU:0.00000709%
User CPU:0.00000000%
Memory:1.12 MB

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 85.71%
Windows XP Home Edition 14.29%

Distribution by countryDistribution by country

United States installs about 100.00% of AOL Connectivity Service.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 100.00%
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