topic Re: Active Directory LastLogonTimestamp EVAL/WHERE Date Math in Splunk Search

Active Directory LastLogonTimestamp EVAL/WHERE Date Math

mcrawford44 — Wed, 18 Dec 2013 20:43:41 GMT

I'm attempting to locate systems that have not logged into AD for 90 days. I am using the following search;

index=foo   | where lastLogonTimestamp<relative_time(now(), "-90d" )  | dedup cn  | table  cn,lastLogonTimestamp,operatingSystem

This does not appear to function. It returns results, however the LastLogonTimestamp field appears to return ALL dates. Reversing the query returns garbage results. Every field returned says "OptionalProperties".

If I recall, this variable is stored in some Microsoft tick time similar to epoch, however Splunk seems to display it properly in the following format;

07:44.36 PM, Sun 11/17/2013

Is Splunk automatically converting this? Do I have to define a format in order to evaluate or use a where command?

Re: Active Directory LastLogonTimestamp EVAL/WHERE Date Math

kristian_kolb — Wed, 18 Dec 2013 20:55:10 GMT

Most likely you'll need to convert the lastLogonTimestamp to epoch before making the comparison.

index=foo lastLogonTimestamp=* 
| eval last_logon = strptime(lastLogonTimestamp, "%H:%M.%S %p, %a %m/%d/%Y") 
| where last_logon < (now() - (86400 * 90)) 
| dedup cn 
| table cn, lastLogonTimestamp, operatingsystem

hope this helps,

Re: Active Directory LastLogonTimestamp EVAL/WHERE Date Math

mcrawford44 — Thu, 19 Dec 2013 13:03:22 GMT

Perfect! Thank you.

Re: Active Directory LastLogonTimestamp EVAL/WHERE Date Math

mcrawford44 — Thu, 19 Dec 2013 14:36:58 GMT

As a note I changed the %H to %I for 12-Hour time. Otherwise perfect and thank you very much for the help.

Re: Active Directory LastLogonTimestamp EVAL/WHERE Date Math

monteirolopes — Mon, 18 Apr 2016 14:11:58 GMT

Hi,
I would like to sort by date. If I use the command "sort -last_logon" , Splunk order by hours. Is it possible convert first to " %m/%d/%Y, %H:%M.%S %p"?

Best regards,
Lopes.