RE: more info on a hopefully unsuccessful compromise

From: Leo, Joel (Joel.Leoat_private)
Date: Mon Jul 14 2003 - 14:25:50 PDT

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    Aloha Dial Joe.
    
    Renaming the built-in administrator does not change it's RID (500,) off
    of which the local account's SID is built. Because of this,
    scriptkiddies/crackers/hackers can reference the account no matter what
    the name is. 
    
    Even though this is the case, it's still a best-practice to rename the
    default administrator account as another layer of security that a
    potential malefeasant would have to penetrate or bypass. It's
    particularly effective with interactive (cracker at kb/mouse/monitor)
    because they may not have the tools or knowledge at hand to determine
    which account has the admin RID. 
    
    An additional layer can be added by doing the following:
    
    1) Rename the administrator account
    2) Copy the renamed account to a new account named Administrator
    3) Disable Administrator account or set crazy restrictions on it with
    Nazi logging (keylogger in startup etc)
    4) Remove the description of the renamed administrator account
    
    This procedure retains the "Built-in account for administering the
    computer/domain" on the copied account, but requires a tool that can
    copy local accounts. My preference is for ntuser.exe.
    
    Your friend was right, for the most part. Leaving an account named
    Administrator gives people a target to shoot for, even though it may not
    do what they think ;)
    
    Hth.
    
    Joel
    
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