Lsass.exe Is not a virus 8), it is the service program of Windows. Local Security Authority Subsystem Service (LSASS) provides an interface for managing local security, domain authentication, and Active Directory processes. It handles authentication for the client and for the server. It also contains features that are used to support Active Directory utilities.
This program is vulnerable to virus SASSER. Apparently, you have picked up it.
Update the Windows on a site microsoft.
It is necessary to establish the following:
KB835732
http: // www.microsoft.com/downloads/details.aspx?FamilyId=3549EA9E-DA3F-43B9-A4F1-AF243B6168F3*displaylang=en
KB841720 - the direct reference
http://download.microsoft.com/download/1/e/b/1eba8a6e-a22a-431f-9df4-a0cd2873e3c5/Windows-KB841720-ENU.exe
The update removes the vulnerability by modifying the way that LSASS processes the specially crafted LDAP message.