its only available from peer to peer file sharing floppies and mass mailing as it shows here
lsass.exe is a system process of the Microsoft Windows security mechanisms. It specifically deals with local security and login policies. Note: lsass.exe also relates to the Windang.worm, irc.ratsou.b, Webus.B, MyDoom.L, Randex.AR, Nimos.worm which spread via floppy disk drives, mass-mailing and peer-to-peer sharing.
go here its a great site and shows what it does with comments of ppl who ahve had it
hope this helps a lil