Suppression of repeated alerts

Hello guys!

Is it possible to configure a suppression to a SIEM's rule on ELK SIEM module?

For example, if 5 events to the same user.id and source.ip in 5 minuts, so will be trigged just 1 alert.

Yes, using the threshold rules you should be able to. Have you tried it out yet? You can set your threshold to be >= 1 with it and then your interval and look-back will help you out with how often it fires.