When the "Read all properties" permission of a user object is set to be
audited in the AD, an event of ID 4662 (An operation was performed on an
object) is triggered whenever a property is accessed.
This rule detects these events by flagging any non-machine
`SubjectUserName` (i.e. another user) which accesses an object of the
`User` AD schema class.
Advantages of this rule include the detection of insider-enumeration
through automated tools such as BloodHound or manually through the usage
of the PowerShell ActiveDirectory module. Although this rule qualifies
as a medium severity one, this event could be qualified as high/critical
one if flagged on non-used canary user-accounts.
False positives may include administrators performing the initial
configuration of new users.
