Full Disclosure: RE: Active Directory accounts

["Angel Barrio" <abmartinez () euskaltel es>]

Hi

We have recently developed a script to gather detailed user information from our AD in order to identify user accounts 
not used for a long time and proceed with deletion of such users. 

During our test, at least we have observed that the LastLogon property is changed not only with the interactively logon 
to a desktop system, but also while mapping a network drive. We have not tested it with third party applications that 
make use of the AD just as and LDAP for authentication, but it is very likely that this property will also be updated 
this way.

Regards,
--------------------------------------------------------
Angel Barrio Martínez,
 
Systems Security Engineer
 
mail: abmartinez () euskaltel es
phone: +34 944011768
fax: 944011030
 
LinkedIn: http://www.linkedin.com/in/abmartinez
 
EUSKALTEL, S.A.
Parque tecnológico de Zamudio Edificio 809 Planta J
48160 Derio (VIZCAYA)
 
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-----Mensaje original-----
De: full-disclosure-bounces () lists grok org uk [mailto:full-disclosure-bounces () lists grok org uk] En nombre de 
Steven Rakick
Enviado el: jueves, 07 de septiembre de 2006 22:36
Para: full-disclosure () lists grok org uk
Asunto: [Full-disclosure] Active Directory accounts

Hello,

I have a question regarding some data I pulled off a
customers AD. We recently ran AD scan to identify
several user accoutn violation types using AD
Inspector (www.obtuse.net/software/adinspector).
Basically the search contained filters for users who
dont have password expirations enabled and also users
who havent logged in in the last 90 days (stale
accounts). Anyways, the results were quite suprising
and I'd like to validate them.

My question is this. Is the lastLogon AD account
property updated any time a user authenticates to AD
regardless of the service? Like, if I login to a 3rd
party application which uses LDAP integration with AD
for authentication, will that update the users
lastLogon property in AD?

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/