Trojan or bugs?

From: crapit (
Date: 04/29/04

Date: Thu, 29 Apr 2004 18:43:11 +0800

Browse through the local security settings and happen to saw this.

>From local polices -\ User Rights Assignment,

Under policy column.
Access this computer from this network,

Under local Setting
MISC, Administrators, Backup Operators, Power Users,
Users, Everyone,

What the crap is this user?
->>> *S-1-5-21-842925246-1801674531-72