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filter out events from lookuptable
Hi,
I have the correlation rule-Substantial Increase In Events enabled but I just want to fine tune this rule based on our environment.
I dont want this rule to fire when there is a match in the signature that is defined in the lookuptable "substantialincreasesignature.csv".
But as soon as I run this it is throwing an error,can you check out this for me.
| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature| search IDS_Attacks.signature!=* [inputlookup substantialincreasesignature.csv]
| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature as signatures AND NOT[|inputlookup substantialincreasesignature|fields signature]
Both search I tried but no results:(
Regards,
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Give this a try
| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature
| search NOT [|inputlookup substantialincreasesignature|fields signature]
Update
It could be the field names returned by the data model doesn't match the field name in lookup. Replace the inputlookup query with this in above
| inputlookup substantialincreasesignature | table signature | rename signature with ExactFieldNameFromDataModelResult]
To get the ExactFieldNameFromDataModelResult, run your base search and check the name of signature field.
| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature
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somesoni2,
your query is working fine,but it is showing data that is present in the lookuptable 'substantialincreasesignature'.I dont want to see the data that I have specified in the lookup table.
| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature
| search NOT [|inputlookup substantialincreasesignature|fields signature]
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See the updated section of the answer
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You say it's throwing an error - what error?
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| tstats allow_old_summaries=true count,values(IDS_Attacks.tag) as orig_tag from datamodel=Intrusion_Detection by IDS_Attacks.signature
| search NOT [|inputlookup substantialincreasesignature|fields IDS_Attacks.signature]
is showing results that is in lookuptable.
How to get the events that is not in the lookuptable?
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