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What is lsass.exe?

Click here to run a free scan on lsass.exe errors.

The table below includes any processes that may be associated with lsass.exe, from which further information can be found by clicking on the process title. The icon beside the information can be used to quickly determine if this is a safe file in combination with the key below:
This file is normally safe to leave running. In most cases, this file is not required to run on startup and can be run manually. Warning, this file may be a virus, spyware, resource hog and running it is not recommended. This file may or may not be necessary to load on startup, depending on your circumstances. No information is available for this item.

lsass.exe Processes:

File Type Process Name and Information
.TEXTCONV
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
.WMAudio
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
BuildLabs
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
ccpApps
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
FriendlyType
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
internet
Added by the DSPY-A TROJAN! Note - this is not the legitimate lsass.exe process which should not normally figure in Msconfig/Startup!
Local Authority Service
Added by the AMRKTMAN-C TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
LogService
Added by the IU TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
LSA Service
Added by the AHKER.G WORM! Note - this is not the legitimate lsass.exe process, which should not appear in Msconfig/Startup!
LSA Shell (Export Version)
Added by several variants of the AHKER WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
LSA Shellu
Detected by Symantec as the SILLYFDC WORM! See here. Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup!
lsass
Added by the RATSOU.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a DebugUserMode subfolder of the Winnt or Windows folder
Lsass
Added by the ALCOP-B WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Lsass
Added by the VOUMIT-A WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a "mirc32" folder
Lsass
Added by the PUNYA-B WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup!
Microsoft Authority Service
Added by the KALEL-D WORM! Note - this is not the legitimate lsass.exe process, which should not appear in Msconfig/Startup!
Microsoft Lsass Manager
Added by a variant of the SDBOT WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup!
Microsoft UPDATER32
Added by the RANDEX.AR WORM! Note - this is not the legitimate Lsass.exe system file should normally NOT figure in Msconfig/Startup!
MicrosoftSourceSafe
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
MS Security Authority Service
Added by the KALEL-B WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
NortonAntivirus
Added by the PEXMOR WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a "Temp" subfolder of the Winnt or Windows folder. It also has nothing to do with Norton AV
Prog
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
RegDoneEx
Added by the WEBUS.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
RsWin
Added by the SILLY.BR WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a "4350" sub-folder
Runner
Added by the DROWSY-B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located the Winnt or Windows folder
Runner
Added by the ADCLICK-AG TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
ServicesLoad
Added by the DEARIS-A TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
system
Added by the SATILOLER.B TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Program FilesCommon Filessystem folder
System Handler
Added by the NIMOS WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the System folder
System Kernel
Added by the VBBOT-G TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
System Process
Added by the ADCLICK-AG TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Task
Added by the PUNYA-A WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup!
ToP
Added by the WOWCRAFT.C TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Traybar
Added by the MYDOOM.L WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Update
Added by the ADCLICK-AG TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Userinit
Added by a variant of the DLOADER-TP TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Program FilesCommon Files folder
Userinit
Added by a variant of the VIRAN-A TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Program FilesCommon FilesSystem folder
Windows Authority Service
Added by the KALEL-E WORM! Note - this is not the legitimate lsass.exe process which should not normally figure in Msconfig/Startup!
Windows auto update
Added by the AHKER.G WORM! Note - this is not the legitimate lsass.exe process, which should not appear in Msconfig/Startup!
Windows Recavery Adware
Added by an unidentified TROJAN - see here. Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup!
Windows Security Authority Service
Added by the KALEL-A WORM! Note - this is not the legitimate lsass.exe process, which should not appear in Msconfig/Startup!
Windows_LowLevel_Security_Core
Added by the PADMIN-A TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a "Repair" subfolder of the Winnt or Windows folder
WinExec
Added by the CRUTLE-B WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Winlogon
Added by the VB-EJ TROJAN! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
Winlogon
Added by the FLOPPY-B VIRUS! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in the Winnt or Windows folder
ZincgrubInc
Added by the VOUMIT-A WORM! Note - this is not the legitimate lsass.exe process which is always located in the System (9x/Me) or System32 (NT/2K/XP) folder and should not normally figure in Msconfig/Startup! This file is located in a "mirc32" folder


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