Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 4.72%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.06%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.22%
6.3.9431.0 (winmain_bluemp.130615-1214) 0.01%
6.2.9200.16384 (win8_rtm.120725-1247) 0.86%
6.1.7601.17725 (win7sp1_gdr.111116-1503) 40.58%
6.1.7601.17725 (win7sp1_gdr.111116-1503) 18.70%
6.1.7600.16915 (win7_gdr.111116-1506) 3.54%
6.1.7600.16385 (win7_rtm.090713-1255) 8.16%
6.1.7600.16385 (win7_rtm.090713-1255) 3.92%
5.1.2600.5512 (xpsp.080413-2113) 12.71%
5.1.2600.5512 (xpsp.080413-2113) 0.91%
5.1.2600.5512 (xpsp.080413-2113) 0.65%
5.1.2600.5512 (xpsp.080413-2113) 0.06%
5.1.2600.5512 (xpsp.080413-2113) 0.59%
5.1.2600.5512 (xpsp.080413-2113) 0.01%
5.1.2600.5512 (xpsp.080413-2113) 0.01%
5.1.2600.5512 (xpsp.080413-2113) 0.38%
5.1.2600.5512 (xpsp.080413-2113) 0.06%
5.1.2600.5512 (xpsp.080413-2113) 0.01%
5.1.2600.5512 (xpsp.080413-2113) 0.17%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 0.06%
5.1.2600.5512 (xpsp.080413-2113) 0.27%
5.1.2600.5512 (xpsp.080413-2113) 0.06%
View more

lsass.exe

Local Security Authority Process by Microsoft Corporation (Signed)

Remove lsass.exe
Version:   5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
MD5:   35c6463b3c5f62d2b20c953b6e1538e9
SHA1:   728ffca2ad6abb73b259c45b7ae8cf66f2d5899e
SHA256:   a28087358fdfa3b6bc835f576296eda79cb847609680e1a8be7f47420705bee3
This is a Windows system installed file with Windows File Protection (WFP) enabled.

What is lsass.exe?

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.

Overview

lsass.exe runs as a service under the name Titkosított fájlrendszer (EFS) (KeyIso) within the local user context as a shared service. The file is digitally signed by Microsoft Corporation. This version is installed on Windows XP and is compiled as a 32 bit program.

DetailsDetails

File name:lsass.exe
Publisher:Microsoft Corporation
Product name:Local Security Authority Process
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\lsass.exe
File version:5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Product version:5.1.2600.2180
Size:13 KB (13,312 bytes)
Certificate
Issued to:Microsoft Corporation
Authority (CA):Microsoft Corporation
Expiration date:Friday, June 13, 2014
Digital DNA
Entropy:5.983062
File packed:No
Code language:Microsoft Visual C++
.NET CLR:No
More details

BehaviorsBehaviors

Services
Runs under 'SYSTEM\CurrentControlSet\Services' as a shared service by the Service Host (svchost.exe)

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00066802%
0.028634%
Kernel CPU:0.00048604%
0.013761%
User CPU:0.00018198%
0.014873%
Kernel CPU time:625 ms/min
100,923,805ms/min
Context switches:21/sec
284/sec
Memory
Private memory:2.74 MB
21.59 MB
Private (maximum):5.11 MB
Private (minimum):420 KB
Non-paged memory:2.74 MB
21.59 MB
Virtual memory:36.9 MB
140.96 MB
Virtual memory (peak):38.9 MB
169.69 MB
Working set:1.25 MB
18.61 MB
Working set (peak):5.12 MB
37.95 MB
Resource allocations
Threads:15
12
Handles:315
600
GUI GDI count:6
103
GUI USER count:1
49

BehaviorsProcess properties

Integrety level:Undefined
Platform:32-bit
Command line:C:\Windows\System32\lsass.exe
Owner:User
Windows Service
Service name:KeyIso
Display name:Titkosított fájlrendszer (EFS)
Description:“Durch den Start dieses Diensts wird anderen Diensten signalisiert, dass die Sicherheitskontenverwaltung (SAM) bereit ist, Anforderungen anzunehmen. Wenn Sie diesen Dienst deaktivieren, wird verhindert, dass andere Dienste im System benachrichtigt werden, wenn die Sicherheitskontenverwaltung bereit ist. Dies kann wiederum dazu führen, dass diese Dienste nicht korrekt gestartet werden. Dieser Dienst”
Type:Win32ShareProcess
Parent process:winlogon.exe (by Microsoft)

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 8.1 34.50%
Windows 8.1 Pro 27.00%
Windows 8.1 Single Language 12.00%
Windows 7 Ultimate 10.50%
Windows 7 Home Premium 7.00%
Windows 8.1 Pro with Media Center 3.00%
Windows 8.1 N 3.00%
Windows 8.1 Enterprise Evaluation 3.00%

Distribution by countryDistribution by country

United States installs about 39.50% of Local Security Authority Process.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
ASUS 30.23%
Dell 24.03%
Acer 17.83%
Lenovo 13.95%
Hewlett-Packard 6.98%
Toshiba 4.65%
Alienware 2.33%
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