Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.1.7600.16385 (win7_rtm.090713-1255) 7.38%
6.1.7600.16385 (win7_rtm.090713-1255) 51.77%
6.1.7600.16385 (win7_rtm.090713-1255) 24.05%
6.1.7600.16385 (win7_rtm.090713-1255) 4.77%
6.1.7600.16385 (win7_rtm.090713-1255) 0.06%
6.1.7600.16385 (win7_rtm.090713-1255) 0.12%
6.1.7600.16385 (win7_rtm.090713-1255) 0.06%
6.1.7600.16385 (win7_rtm.090713-1255) 0.12%
6.0.6001.18000 (longhorn_rtm.080118-1840) 9.11%
6.0.6001.18000 (longhorn_rtm.080118-1840) 1.98%
6.0.6000.16386 (vista_rtm.061101-2205) 0.56%

Relationships

Parent process
Child processes
Related files

lsm.exe

Local Session Manager Service by Microsoft

Remove lsm.exe
Version:   6.1.7600.16385 (win7_rtm.090713-1255)
MD5:   9662ee182644511439f1c53745dc1c88
SHA1:   6766228926eb48344451737c61d0e05dbe390591
SHA256:   d205b2c163e78ab42a5d67d7664ef6b75ea0374ff0924467d624f9db0611f0ad
This is a Windows system installed file with Windows File Protection (WFP) enabled.

What is lsm.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

lsm.exe executes as a process under the SYSTEM account with extensive privileges (the system and the administrator accounts have the same file privileges) typically within the context of its parent wininit.exe (Windows Start-Up Application by Microsoft). This version is designed to run on Windows 7 and is compiled as a 64 bit program.

DetailsDetails

File name:lsm.exe
Publisher:Microsoft Corporation
Product name:Local Session Manager Service
Description:Microsoft® Windows® Operating System
Typical file path:C:\Windows\System32\lsm.exe
Original name:lsm.exe.mui
File version:6.1.7600.16385 (win7_rtm.090713-1255)
Product version:6.1.7600.16385
Size:335 KB (343,040 bytes)
Digital DNA
Entropy:6.506473
File packed:No
Code language:Microsoft Visual C++
.NET CLR:No
More details

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Averages
 
CPU
Total CPU:0.00049906%
0.028634%
Kernel CPU:0.00029194%
0.013761%
User CPU:0.00020713%
0.014873%
Kernel CPU time:2,949,692 ms/min
100,923,805ms/min
CPU cycles:272,832/sec
17,470,203/sec
Context switches:17/sec
284/sec
Memory
Private memory:2.92 MB
21.59 MB
Private (maximum):4.35 MB
Private (minimum):3.03 MB
Non-paged memory:2.92 MB
21.59 MB
Virtual memory:21.1 MB
140.96 MB
Virtual memory (peak):22.68 MB
169.69 MB
Working set:3.41 MB
18.61 MB
Working set (peak):4.74 MB
37.95 MB
Page faults:8,798/min
2,039/min
I/O
I/O read transfer:505 Bytes/sec
1.02 MB/min
I/O read operations:1/sec
343/min
I/O other transfer:107 Bytes/sec
448.09 KB/min
I/O other operations:8/sec
1,671/min
Resource allocations
Threads:11
12
Handles:180
600

BehaviorsProcess properties

Integrety level:System
Platform:64-bit
Command line:C:\Windows\System32\lsm.exe
Owner:SYSTEM
Parent process:wininit.exe (Windows Start-Up Application by Microsoft)

ResourcesThreads

Averages
 
ntdll.dll
Total CPU:0.03323135%
0.272967%
Kernel CPU:0.01346007%
0.107585%
User CPU:0.01977127%
0.165382%
CPU cycles:485,336/sec
5,741,424/sec
Context switches:2/sec
79/sec
Memory:1.66 MB
1.16 MB
lsm.exe (main module)
Total CPU:0.00023751%
Kernel CPU:0.00017054%
User CPU:0.00006698%
CPU cycles:3,430/sec
Memory:348 KB
ole32.dll
Total CPU:0.00008079%
Kernel CPU:0.00000000%
User CPU:0.00008079%
CPU cycles:583/sec
Memory:2.01 MB

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 56.00%
Windows 7 Ultimate 26.00%
Windows 7 Professional 9.00%
Windows 7 Home Basic 3.50%
Windows Vista Home Premium 3.50%
Windows 7 Starter 1.00%
Windows Seven Black Edition 0.50%
Windows Vista Home Basic 0.50%

Distribution by countryDistribution by country

United States installs about 47.24% of Local Session Manager Service.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 26.42%
Hewlett-Packard 18.87%
ASUS 13.58%
Acer 12.83%
Toshiba 12.08%
Sony 3.77%
Lenovo 3.02%
Samsung 2.26%
GIGABYTE 2.26%
MSI 1.51%
Alienware 0.75%
Medion 0.75%
Intel 0.75%
Gateway 0.75%
Sahara 0.38%
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