Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

4.5.0218.0 4.51%
4.5.0218.0 1.56%
4.5.0216.0 4.51%
4.4.0304.0 2.69%
4.4.0304.0 0.52%
4.4.0304.0 0.26%
4.4.0304.0 0.09%
4.4.0207.0 0.09%
4.3.0219.0 3.90%
4.3.0219.0 2.60%
4.3.0216.0 1.30%
4.3.0216.0 0.95%
4.3.0215.0 2.17%
4.3.0215.0 5.72%
4.3.0215.0 0.78%
4.3.0215.0 1.04%
4.2.0223.0 13.27%
4.2.0223.0 10.15%
4.2.0223.0 1.04%
4.2.0223.0 10.93%
4.2.0216.0 0.09%
4.2.0216.0 0.26%
4.1.0522.0 12.32%
4.1.0522.0 12.06%
4.0.1526.0 0.09%
View more

Relationships

Parent process
Child process
Related files

PE structurePE file structure

Show functions
Import table
kernel32.dll
GetLastError, GetModuleFileNameW, LoadLibraryW, FreeLibrary, GetProcAddress, GetCurrentProcess, TerminateProcess, GetSystemTimeAsFileTime, GetCurrentProcessId, GetCurrentThreadId, GetTickCount, QueryPerformanceCounter, GetModuleHandleA, SetUnhandledExceptionFilter, RtlUnwind, InterlockedCompareExchange, Sleep, InterlockedExchange, UnhandledExceptionFilter, ExitProcess
mpsvc.dll
ServiceCrtMain
msvcrt.dll
DllMain

MsMpEng.exe

Microsoft Malware Protection by Microsoft Corporation (Signed)

Remove MsMpEng.exe
Version:   4.2.0223.0
MD5:   c1f19d2bacbee9ab64d9ae69e9859ac0
SHA1:   1712e818e2d8cdc6c63560bcdba47b754fff9823
SHA256:   11f55350ef5219b132a1e04c8bf8a521089f62d7207d40f7f3c6e8b6e04090a1

What is MsMpEng.exe?

MsMpEng.exe is the back-end of Microsoft Security Essentials. It is important to remember that this process is actually used by both Windows Defender and MSE. When you install Microsoft Security Essentials, then Windows Defender is automatically turned off and Microsoft Security Essentials uses this process. This is the main process that runs the program and takes quite some system memory. If you end this process then Microsoft Security Essentials will be disabled and an alert will be shown aski

About MsMpEng.exe (from Microsoft Corporation)

Windows Defender is software that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software by detecting and removing known spyw

DetailsDetails

File name:MsMpEng.exe
Publisher:Microsoft Corporation
Product name:Microsoft Malware Protection
Description:AntiMalware Service Executable
Typical file path:C:\Program Files\microsoft security essentials\msmpeng.exe
File version:4.2.0223.0
Size:19.98 KB (20,456 bytes)
Certificate
Issued to:Microsoft Corporation
Authority (CA):Microsoft Corporation
Effective date:Wednesday, October 22, 2008
Expiration date:Friday, January 22, 2010
Digital DNA
PE subsystem:Windows GUI
Entropy:6.372596
File packed:No
Code language:Microsoft Visual C++
.NET CLR:No
More details

ResourcesPrograms

The following programs will install this file
Microsoft Corporation
8% remove
Microsoft Security Essentials is an antivirus software product that provides protection against different types of malware such as computer viruses, spyware, rootkits and Trojan horses. It runs on Windows XP, Windows Vista and Windows 7, but not on Windows 8, which has a built-in AV component. Built upon the same virus definitions and scanning engine as other Microsoft antivirus products, MSE provides real-time protection, constantly mo...
Microsoft Corporation
1% remove
The Microsoft Security Essentials Prerelease program allows users to run the latest & greatest versions of Security Essentials before they are publicy available.
Microsoft Corporation
1% remove
Microsoft Forefront is a family of line-of-business security software that are designed to help protect computer networks, network servers (such as Microsoft Exchange Server and Microsoft SharePoint Server) and individual devices.
Microsoft Corporation
5% remove
Security and management have traditionally existed as two separate disciplines, yet both play a central role in keeping your users safe and productive. Microsoft System Center 2012 Endpoint Protection (previously known as Forefront Endpoint Protection) allows you to consolidate desktop security and management in a single solution. Built on System Center 2012 Configuration Manager, System Center 2012 Endpoint Protection provides a sin...
Microsoft Corporation
1% remove
Manage PCs and multiple types of mobile devices in one unified solution, either through the cloud or by extending your existing on-premises infrastructure. Whether using corporate or employee-owned devices, Windows Intune helps provide a security-enhanced environment with comprehensive update and policy management. Use Windows Intune to give employees access to the resources and applications they need on the devices they choose without ...

BehaviorsBehaviors

Services
Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)
  • WinDefend
  • 'MsMpSvc' (Microsoft Antimalware Service)

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.01345902%
0.028634%
Kernel CPU:0.00556303%
0.013761%
User CPU:0.00789599%
0.014873%
Kernel CPU time:57,625,827 ms/min
100,923,805ms/min
CPU cycles:4,361,484/sec
17,470,203/sec
Context switches:45/sec
284/sec
Memory
Private memory:71.03 MB
21.59 MB
Private (maximum):122.45 MB
Private (minimum):29.89 MB
Non-paged memory:71.03 MB
21.59 MB
Virtual memory:201.44 MB
140.96 MB
Virtual memory (peak):412.35 MB
169.69 MB
Working set:53.59 MB
18.61 MB
Working set (peak):258.43 MB
37.95 MB
Page faults:8,270,100/min
2,039/min
I/O
I/O read transfer:971.61 KB/sec
1.02 MB/min
I/O read operations:162/sec
343/min
I/O write transfer:279.9 KB/sec
274.99 KB/min
I/O write operations:5/sec
227/min
I/O other transfer:272.41 KB/sec
448.09 KB/min
I/O other operations:5,699/sec
1,671/min
Resource allocations
Threads:27
12
Handles:494
600
GUI GDI count:4
103
GUI USER count:3
49

BehaviorsProcess properties

Integrety level:System
Platform:32-bit
Command line:"C:\Program Files\microsoft security client\msmpeng.exe"
Owner:SYSTEM
Windows Service
Service name:WinDefend
Display name:Windows Defender-Dienst
Description:“Schützt Benutzer vor Schadsoftware und weiterer potenziell unerwünschter Software.”
Type:Win32OwnProcess
Parent process:services.exe (Services and Controller app by Microsoft)

ResourcesThreads

Averages
 
ntdll.dll
Total CPU:0.86729471%
0.272967%
Kernel CPU:0.36548115%
0.107585%
User CPU:0.50181356%
0.165382%
Context switches:8/sec
79/sec
Memory:712 KB
1.16 MB
msvcrt.dll (Windows NT CRT DLL by Microsoft)
Total CPU:0.29647268%
Kernel CPU:0.01047818%
User CPU:0.28599450%
Context switches:1/sec
Memory:352 KB
MsMpEng.exe (main module)
Total CPU:0.00040203%
Kernel CPU:0.00022622%
User CPU:0.00017581%
CPU cycles:1,802/sec
Memory:24 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
Windows 7 Home Premium 31.50%
Windows 8.1 14.50%
Windows 7 Ultimate 13.00%
Windows 7 Professional 8.00%
Windows 8.1 Pro 6.50%
Windows 8 6.00%
Windows 8 Pro 5.50%
Windows 8 Single Language 3.50%
Windows 8.1 Single Language 3.00%
Windows 8.1 Pro with Media Center 2.00%
Windows Vista Home Premium 2.00%
Microsoft Windows XP 1.50%
Windows 8 Enterprise 1.00%
Windows 8.1 N 0.50%
Windows 8.1 Enterprise Evaluation 0.50%
Windows 8 Enterprise N 0.50%
Windows 8 Enterprise Evaluation 0.50%

Distribution by countryDistribution by country

United States installs about 45.50% of Microsoft Malware Protection.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 24.10%
Hewlett-Packard 15.26%
Acer 13.25%
ASUS 12.05%
Lenovo 12.05%
Toshiba 8.84%
Sony 4.02%
GIGABYTE 3.61%
Intel 3.21%
Samsung 1.61%
Compaq 1.61%
Alienware 0.40%
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