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What is MSASCui.exe?

Part of Windows Defender by Microsoft

What is it?

MSASCui.exe is the Windows Defender User Interface, the main UI for Windows Defender.
Description of msascui.exe from Microsoft
Windows Defender is a free program that helps you stay productive by protecting your computer against pop-ups, slow performance and security threats caused by spyware and other potentially unwanted software. Windows Defender provides real-time protection for your home or small business PC that guards against viruses, spyware, and other malicious software. Windows Defender is a free* download from Microsoft that is simple to install, easy to use, and is automatically updated to protect your PC with the latest technology. Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times. Windows Defender is able to detect and remove more threats posed by spyware and other potentially unwanted software. Real Time Protection has also been enhanced to better monitor key points in the operating system for changes.
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How does msascui.exe run?

Process - MSASCui.exe is an instance of a running program. This 32-bit program executes with the privileges as the currently logged in user account. MSASCui.exe is executed by the process explorer.exe (Windows Explorer by Microsoft).

How does msascui.exe start?

Startup files (all users) run - MSASCui.exe is registered with the run identifier 'Windows Defender' and the execution command '"C:\Program Files\Windows Defender\MSASCui.exe" -hide' in the Windows registry HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run. Run keys are startup registry keys that are used to launch an application automatically when any Windows user logs into Windows.
Windows Defender is loaded by:

Community

What is the community is seeing?What is the community is doing?
About 0.1% of all Boost users have the msascui.exe process running.Of the 0.1% of msascui.exe users, 18.0% have disabled it.
How stable is Windows Defender?
Based on crash data discovered by Boost, stability is a measure of how sound this particular process and the average percent of times it crashes.
     msascui.exe0.03%
Typical program1.26%
How resource intensive is MSASCui.exe?
Comparison based on the average resource utilization across all programs.
0.00180% CPU17994.8%
Average CPU utilization across all programs is 0.00001%.
7.29 MB RAM33.9%
Average private memory utilization across all programs is 21.53 MB.
 4 /min0.2%
Average I/O read and write operations for all programs is 2,253 per minute.
130 GDI objects86.7%
Average number of GUI GDI and USER objects for all programs is 150.
Typical file (disk image) location:
C:\Program Files\windows defender\msascui.exe

Are there other versions of Windows Defender?

What modules are loaded?

A module is a dynamic link library (DLL) or an executable file that is loaded into the process. Below is a list of non-system modules that are loaded by Windows Defender.

What else is related?

Windows Defender Stability

msascui.exe crashes or has encountered a critical error 0.8900% of the time.
1.  
Error: Stopped responding and was closed (AppHangXProcB1)
Details: A problem caused this program to stop interacting with Windows.
Occurred: over 6 months ago
2.  
Error: MpTelemetry (MpTelemetry)
Occurred: over 6 months ago
3.  
Error: MpTelemetry (MpTelemetry)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.196608)
Windows Vista (TM) Home Basic (6.0.6001.65536)
Windows Vista (TM) Home Premium (6.0.6001.65536)
Windows Vista (TM) Ultimate (6.0.6001.65536)
Windows Vista (TM) Business (6.0.6002.131072)
Windows Vista (TM) Home Basic (6.0.6002.131072)
Windows Vista (TM) Home Premium (6.0.6002.131072)
Windows Vista (TM) Ultimate (6.0.6002.131072)
Windows Vista Home Premium (6.0.6002.131072)
Windows Vista Ultimate (6.0.6002.131072)

About Microsoft Corporation

Microsoft, founded in 1975 by Bill Gates and Paul Allen, is a veteran software company, best known for its Microsoft Windows operating system and the Microsoft More...
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File details

File name: MSASCui.exe
Publisher: Microsoft Corporation (verified)
Name: Windows Defender
Description: Windows Defender User Interface
Version: 1.1.1600.0
Size: 984.55 KB
Original file name: MSASCUI.exe

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 4/4/2006
Expiration date: 10/4/2007

Resource utilization

CPU utilization averages
Total CPU: 0.0041016317%
Privileged CPU: 0.0023021481%
User CPU: 0.00179948357715%
Total CPU time: 14 ms
Total CPU time /min: 0 ms
Privileged CPU time: 1635023.03 ms
Privileged CPU time /min: 340 ms
User CPU time: 5.21 ms
User CPU time /min: 0 ms
CPU cycle count: 1,377,003
CPU cycle count /min: 161,104,224
Memory utilization averages
Committed memory: 96.56 MB
Peak committed memory: 99.19 MB
Paged memory: 7.29 MB
Peak paged memory: 7.58 MB
Paged system memory: 163.98 KB
Non-paged system memory: 12.01 KB
Working set memory: 6.53 MB
Peak working set memory: 9.99 MB
Min working set memory: 4.6 MB
Private memory: 7.29 MB
Page faults: 9,326
Page faults /min: 338
Process I/O averages
Total read operations: 18
Read operations /min: 2
Total read transfer: 6.14 KB
Read transfer /min: 104 Bytes
Total write operations: 20
Write operations /min: 2
Total write transfer: 2.57 KB
Write transfer /min: 94 Bytes
Total other operations: 4,480
Other operations /min: 56
Total other transfer: 128.36 KB
Other Transfer /min: 1.52 KB
GUI Object Averages
GDI objects: 130
USER objects: 126
Resources
Handle count average: 365
Thread count average: 11
Thread resource averages
ntdll.dll
mpclient.dll
rpcrt4.dll
ntdll.dll
rpcrt4.dll
rpcrt4.dll
gdiplus.dll
ntdll.dll
mprtmon.dll
gdiplus.dll
gdiplus.dll

Process details

Runs as (owner): User
Integrety level: Medium
Windows platform: 32-bit
System Tray: Yes
Parent Processes
Process Commands
"C:\Program Files\Windows Defender\MSASCui.exe" -hide
"C:\Program Files\Windows Defender\MSASCui.exe" -Hide

Startup files (all users) run details

Name: Windows Defender User Interface
Command: "C:\Program Files\Windows Defender\MSASCui.exe" -hide

Image hashes

MD5: 0d392ede3b97e0b3131b2f63ef1db94e
SHA-1: e92253719e1b71920add22992d32c9f02705dfdc
SHA-256: 3eda280f91097293e00bf984d377e1111cfde1fc81b30a3fdeb38f321ef82bb6

PE image details

Subsystem: Windows GUI
Langauge*: Microsoft Visual C++ 8.0
File entropy: 6.32243
File packed: No
Import Table
advapi32.dll
comctl32.dll
gdi32.dll
gdiplus.dll
kernel32.dll
mpclient.dll
mprtmon.dll
msmpres.dll
msvcp80.dll
msvcr80.dll
msvcrt.dll
netapi32.dll
ole32.dll
oleacc.dll
rpcrt4.dll
shell32.dll
shlwapi.dll
urlmon.dll
user32.dll
version.dll
winhttp.dll
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