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What is lsass.exe?

Part of Local Security Authority Process by Microsoft

What is it?

Local Security Authority Subsystem Service (LSASS), is a process in Microsoft Windows operating systems that is responsible for enforcing the security policy on the system. It verifies users logging on to a Windows computer or server, handles password changes, and creates access tokens.

What if I disable Local Security Authority Process?

Termination of lsass.exe will result in the Welcome screen losing its accounts, prompting a restart of the PC.
(lsass.exe is a system file that is installed with Windows)
Download Boost and enjoy your PC. Speed up Local Security Authority Process and optimize your PC.

How does lsass.exe run?

Service - lsass.exe runs as a background Windows service called 'KeyIso' (Изоляция ключей CNG). This is a system service that is installed with the Windows operating system and protected with Window's File Protection. This service runs as the SYSTEM account with extensive privileges on the local computer, and acts as the computer on the network. Изоляция ключей CNG runs as a service that can share a process with other Win32 services.

Community

What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the lsass.exe process running.Of the 0.2% of lsass.exe users, less than 1% have disabled it.
How resource intensive is lsass.exe?
Comparison based on the average resource utilization across all programs.
0.00137% CPU13676.8%
Average CPU utilization across all programs is 0.00001%.
          3.04 MB RAM14.1%
Average private memory utilization across all programs is 21.53 MB.
Typical file (disk image) location:
C:\Windows\System32\lsass.exe

Are there other versions of Local Security Authority Proce...?

What else is related?

What Windows OS versions does this run on?

Windows 8.1 Pro (6.2.9200.0)

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: lsass.exe
Publisher: Microsoft Corporation (verified)
Name: Local Security Authority Process
Description: Microsoft® Windows® Operating System
Version: 6.3.9600.16384 (winblue_rtm.130821-1623)
Product version: 6.3.9600.16384
Size: 33.27 KB
Original file name: lsass.exe
Windows file protection: Yes

Digital certificate

Certificate authority: Microsoft Corporation
Expiration date: 6/13/2014

Resource utilization

CPU utilization averages
Total CPU: 0.0023238250%
Privileged CPU: 0.0009561480%
User CPU: 0.00136767696517%
Privileged CPU time: 593.75 ms
Privileged CPU time /min: 0 ms
CPU cycle count: 1,221,966,736
Memory utilization averages
Committed memory: 30.63 MB
Peak committed memory: 32.2 MB
Paged memory: 3.04 MB
Peak paged memory: 3.19 MB
Paged system memory: 76.15 KB
Non-paged system memory: 10.38 KB
Working set memory: 8.12 MB
Peak working set memory: 8.28 MB
Min working set memory: 7.52 MB
Private memory: 3.04 MB
Page faults: 4,401
Page faults /min: 0
Process I/O averages
Total read operations: 191
Total read transfer: 22.63 KB
Total write operations: 86
Total write transfer: 128.43 KB
Total other operations: 2,458
Total other transfer: 1.72 MB
Resources
Handle count average: 867
Thread count average: 5
Thread resource averages
ntdll.dll

Process details

Runs as (owner): System
Integrety level: System
Windows platform: 32-bit
Runs as a service: Yes
Parent Process
Process Command
C:\WINDOWS\system32\lsass.exe

Service details

Name: Изоляция ключей CNG
Service name: KeyIso
Service type: Win32ShareProcess
Description: “Служба изоляции ключей CNG размещается в процессе LSA. Эта служба обеспечивает изоляцию процесса ключа для закрытых ключей и связанных операций криптографии, как того требуют общие критерии. Эта служба хранит и использует долгоживущие ключи в безопасном процессе в соответствии с требованиями общих критериев.”

Network connectivity

TCP: localhost on port 49157

Image hashes

MD5: f33bfcbbbaace7208db433b6cca98930
SHA-1: 660c41bbcb56ccceda63811c9211c583ccbf4f8d

PE image details

Langauge*: Microsoft Visual C++
File entropy: 5.98306
File packed: No
Import Table
api-ms-win-core-crt-l1-1-0.dll
api-ms-win-core-crt-l2-1-0.dll
api-ms-win-core-errorhandling-l1-1-0.dll
api-ms-win-core-errorhandling-l1-1-1.dll
api-ms-win-core-handle-l1-1-0.dll
api-ms-win-core-heap-obsolete-l1-1-0.dll
api-ms-win-core-interlocked-l1-1-0.dll
api-ms-win-core-libraryloader-l1-1-0.dll
api-ms-win-core-libraryloader-l1-1-1.dll
api-ms-win-core-libraryloader-l1-2-0.dll
api-ms-win-core-localregistry-l1-1-0.dll
api-ms-win-core-misc-l1-1-0.dll
api-ms-win-core-processenvironment-l1-1-0.dll
api-ms-win-core-processenvironment-l1-2-0.dll
api-ms-win-core-processthreads-l1-1-0.dll
api-ms-win-core-processthreads-l1-1-1.dll
api-ms-win-core-processthreads-l1-1-2.dll
api-ms-win-core-profile-l1-1-0.dll
api-ms-win-core-registry-l1-1-0.dll
api-ms-win-core-synch-l1-1-0.dll
api-ms-win-core-synch-l1-2-0.dll
api-ms-win-core-sysinfo-l1-1-0.dll
api-ms-win-core-sysinfo-l1-2-0.dll
api-ms-win-core-sysinfo-l1-2-1.dll
api-ms-win-security-base-l1-1-0.dll
api-ms-win-security-base-l1-2-0.dll
msvcrt.dll
ntdll.dll
rpcrt4.dll
sspisrv.dll
Export Table
lsagetinterface
lsaregisterextension
lsaregisterinterface
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