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What is mpsigstub.exe?

Part of Microsoft Malware Protection by Microsoft

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How does mpsigstub.exe run?

Process - mpsigstub.exe is an instance of a running program. This program executes under the SYSTEM account within Windows with extensive privileges on the local computer, and acts as the computer on the network. mpsigstub.exe is executed by the process am_delta_patch_1.153.161.0.exe (Microsoft Malware Protection by Microsoft).


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the mpsigstub.exe process running.Of the 0.2% of mpsigstub.exe users, 25.0% have disabled it.
How stable is Microsoft Malware Protection?
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.
Typical program1.26%
Typical file (disk image) location:

Are there other versions of Microsoft Malware Protection?

Why are multiple of the same versions listed?

What else is related?

Microsoft Malware Protection Stability

mpsigstub.exe crashes or has encountered a critical error 0.8900% of the time.
Error: MpTelemetry (MpTelemetry)
Occurred on: September 7, 2013
Error: MpTelemetry (MpTelemetry)
Occurred on: September 7, 2013
Error: MpTelemetry (MpTelemetry)
Occurred: over 6 months ago

What Windows OS versions does this run on?

Microsoft Windows XP (5.1.2600.196608)

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: mpsigstub.exe
Publisher: Microsoft Corporation (verified)
Name: Microsoft Malware Protection
Description: Microsoft Malware Protection Signature Update Stub
Version: 11.1.4406.0
Size: 233.27 KB
Original file name: MpSigStub.exe

Digital certificate

Certificate authority: Microsoft Corporation
Effective date: 9/5/2012
Expiration date: 3/5/2013

Resource utilization

CPU utilization averages
Total CPU: 1.1119627136%
Privileged CPU: 0.2833764889%
User CPU: 0.82858622475401%
Memory utilization averages
Min working set memory: 0 Bytes

Process details

Runs as (owner): System
Windows platform: 32-bit
Parent Process
Process Command
MpSigStub.exe /program "C:\WINDOWS\SoftwareDistribution\Download\Install\AM_Delta_Patch_1.153.161.0.exe" ANTIMALWARE /q

Image hashes

MD5: 5fc2e943231abd2ae60e9f80581f765c
SHA-1: 2783f5f3d34fb5f1c6c87da88448ece55bb0bc03
SHA-256: e64a05dc3c8209d1b094b64b2b8c2720dcf7342f5cad3d3c49cb64932c2a3fba

PE image details

CLR assembly: Yes
Langauge*: Microsoft Visual C# / Basic .NET
File packed: No
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