Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

5.20.19a 38.46%
5.20.09a 23.08%
5.20.08a 38.46%

Relationships


PE structurePE file structure

Show functions
Import table
advapi32.dll
AdjustTokenPrivileges, InitializeSecurityDescriptor, SetSecurityDescriptorDacl, GetUserNameA, RegCreateKeyExA, RegSetValueExA, RegOpenKeyExA, RegQueryValueExA, RegCloseKey, OpenProcessToken, RegEnumValueA, RegDeleteValueA, RegNotifyChangeKeyValue, RegCreateKeyA, RegOpenKeyA, RegDeleteKeyA, RegQueryInfoKeyA, RegEnumKeyExA, LookupPrivilegeValueA
dlaapi_w.dll
TfsGetConfigString, DLAOperationStatus, TfsPnpDevice, TfsCancelCallback, TfsGetDriveStatus2, TfsInitInstance, TfsInitCallbacks1, TfsTermInstance, TfsGetFileSystemStatus, TfsGetIniFileName, TfsGetDriveClientFolder, DLAOperationStart, DLAOperationFree, TfsGetUserNotificationCode, TfsCallOnUserNotification, TfsGetDriveCaps, TfsCommand, TfsProcessEjectRequestNotify
dlacresw.dll
GetResourceHandle
gdi32.dll
StretchBlt, DeleteObject, CreateCompatibleDC, SelectObject, SetBkColor, CreateBitmap, SetTextColor, DeleteDC
kernel32.dll
GetCurrentProcess, IsBadCodePtr, SetSystemPowerState, IsBadReadPtr, lstrlenA, lstrcpyA, lstrcmpiA, GlobalUnlock, GlobalLock, InterlockedIncrement, InterlockedDecrement, CreateThread, SetEvent, WaitForMultipleObjects, GetPrivateProfileStringA, WriteFile, ReadFile, GetTempFileNameA, GetTempPathA, LocalAlloc, UnmapViewOfFile, lstrcatA, GetProfileStringA, GetModuleHandleA, GetStartupInfoA, GetCommandLineA, GetVersion, ExitProcess, HeapFree, HeapAlloc, TerminateProcess, UnhandledExceptionFilter, GetModuleFileNameA, FreeEnvironmentStringsA, FreeEnvironmentStringsW, WideCharToMultiByte, GetEnvironmentStrings, GetEnvironmentStringsW, SetHandleCount, GetStdHandle, GetFileType, GetEnvironmentVariableA, HeapDestroy, HeapCreate, VirtualFree, RtlUnwind, HeapReAlloc, HeapSize, VirtualAlloc, SetFilePointer, GetStringTypeA, GetStringTypeW, GetCPInfo, GetACP, GetOEMCP, SetStdHandle, FlushFileBuffers, LCMapStringA, LCMapStringW, SetEndOfFile, OpenFileMappingA, CreateFileMappingA, MapViewOfFile, MultiByteToWideChar, FindFirstFileA, DeleteFileA, FindNextFileA, FindClose, FormatMessageA, LocalFree, FreeLibrary, GetVersionExA, CreateMutexA, LoadLibraryA, GetProcAddress, WritePrivateProfileStringA, GetTickCount, GetPrivateProfileIntA, DeviceIoControl, SetErrorMode, CreateFileA, lstrcpynA, GetDriveTypeA, GetVolumeInformationA, CreateEventA, WaitForSingleObject, CloseHandle, GetLastError, GetFileSize
ole32.dll
CoInitialize, CoUninitialize, CoRevokeClassObject, CoGetMalloc, CoCreateInstance, ReleaseStgMedium, CoRegisterClassObject
shell32.dll
DragQueryFileA, SHGetMalloc, SHGetSpecialFolderLocation, SHGetPathFromIDListA, ShellExecuteA
user32.dll
EnableMenuItem, GetSystemMenu, GetWindowLongA, GetDesktopWindow, SetWindowLongA, EnableWindow, IsWindow, TranslateMessage, GetWindowRect, ScreenToClient, GetParent, MoveWindow, GetClientRect, IsZoomed, IsIconic, FillRect, InvalidateRect, CheckDlgButton, SetDlgItemTextA, GetDlgItemTextA, SetFocus, ExitWindowsEx, MessageBoxA, LoadStringA, RegisterClipboardFormatA, GetActiveWindow, CreateDialogParamA, SetWindowTextA, SetWindowPos, SetForegroundWindow, SetActiveWindow, GetMessageA, PeekMessageA, IsDialogMessageA, DispatchMessageA, LoadCursorA, SetCursor, ShowWindow, EndDialog, SetTimer, CharUpperA, KillTimer, PostQuitMessage, SendMessageA, DefWindowProcA, FindWindowA, RegisterClassA, CreateWindowExA, DestroyWindow, PostMessageA, wsprintfA, GetDlgItem, GetWindowTextA, IsDlgButtonChecked, BroadcastSystemMessage, DialogBoxParamA

dlactrlw.exe

By Sonic Solutions

Remove dlactrlw.exe
Version:   5.20.19a
MD5:   17730174d7426cd567001b77341c5ece
SHA1:   31ae8c27b09239e961a28eb827225960129aadb7
SHA256:   d195f0e4e01f48b45fcca588b13860838dd9b5fe94c4e6dbed430fed7baed96b

What is dlactrlw.exe?

Drive Letter Access (DLA) is a discontinued commercial packet writing application for the Microsoft Windows operating system that allows optical disc data storage devices to be used in a manner similar to floppy disks. DLA is a packet writing technology for CD and DVD media that uses the UDF file system.

Overview

dlactrlw.exe executes as a process with the local user's privileges. It is set to be start when the PC boots and any user logs into Windows (added to the Run registry key for the all users under the local machine).

DetailsDetails

File name:dlactrlw.exe
Publisher:Sonic Solutions
Description:Drive Letter Access Component
Typical file path:C:\Windows\System32\dla\dlactrlw.exe
File version:5.20.19a
Size:120.06 KB (122,940 bytes)
Digital DNA
PE subsystem:Windows GUI
File packed:No
.NET CLR:No
More details

BehaviorsBehaviors

Startup files (all users) run
Runs under the registry key 'HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
  • 'DLA' → "C:\WINDOWS\System32\DLA\DLACTRLW.EXE"

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00018473%
0.028634%
Kernel CPU:0.00017019%
0.013761%
User CPU:0.00001454%
0.014873%
Kernel CPU time:47,115 ms/min
100,923,805ms/min
Context switches:11/sec
284/sec
Memory
Private memory:1.62 MB
21.59 MB
Private (maximum):3.78 MB
Private (minimum):3.66 MB
Non-paged memory:1.62 MB
21.59 MB
Virtual memory:41.86 MB
140.96 MB
Virtual memory (peak):46.23 MB
169.69 MB
Working set:3.77 MB
18.61 MB
Working set (peak):4.19 MB
37.95 MB
Page faults:1,883/min
2,039/min
I/O
I/O read transfer:269 Bytes/sec
1.02 MB/min
I/O read operations:1/sec
343/min
I/O write transfer:14 Bytes/sec
274.99 KB/min
I/O write operations:14/sec
227/min
I/O other transfer:9.07 KB/sec
448.09 KB/min
I/O other operations:66/sec
1,671/min
Resource allocations
Threads:8
12
Handles:101
600
GUI GDI count:9
103
GUI USER count:7
49

BehaviorsProcess properties

Integrety level:Undefined
Platform:32-bit
Command line:"C:\Windows\System32\dla\dlactrlw.exe"
Owner:User
Parent process:Explorer.EXE (Windows Explorer by Microsoft)

ResourcesThreads

Averages
 
DLACTRLW.EXE (main module)
Total CPU:0.00034229%
0.272967%
Kernel CPU:0.00032539%
0.107585%
User CPU:0.00001690%
0.165382%
Memory:128 KB
1.16 MB
dlaapi_w.dll (by Sonic Solutions)
Total CPU:0.00020906%
Kernel CPU:0.00017700%
User CPU:0.00003206%
Context switches:2/sec
Memory:60 KB

Common loaded modules

These are modules that are typiclaly loaded within the context of this process.

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Microsoft Windows XP 92.31%
Windows 7 Home Premium 7.69%

Distribution by countryDistribution by country

United States installs about 46.15% of dlactrlw.exe.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 71.43%
Toshiba 28.57%
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