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January 4, 2018 22:28
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| input { | |
| kafka { | |
| topics => ["bro-raw"] | |
| add_field => { "[@metadata][stage]" => "broraw_kafka" } | |
| # Set this to one per kafka partition to scale up | |
| #consumer_threads => 4 | |
| group_id => "bro_logstash" | |
| bootstrap_servers => | |
| codec => json | |
| auto_offset_reset => "earliest" | |
| } | |
| } | |
| filter { | |
| if "_jsonparsefailure" in [tags] { | |
| drop { } | |
| } | |
| if [@metadata][stage] == "broraw_kafka" { | |
| # Set the timestamp | |
| date { match => [ "ts", "ISO8601" ] } | |
| # move metadata to new field | |
| mutate { | |
| rename => { | |
| "@stream" => "[@meta][stream]" | |
| "@system" => "[@meta][system]" | |
| "@proc" => "[@meta][proc]" | |
| } | |
| } | |
| # Rename ID field from file analyzer logs | |
| if [@meta][stream] in ["pe", "x509", "files"] { | |
| mutate { rename => { "id" => "fuid" } } | |
| mutate { | |
| add_field => { "[@meta][event_type]" => "file" } | |
| add_field => { "[@meta][id]" => "%{fuid}" } | |
| } | |
| } else if [@meta][stream] in ["intel", "notice", "notice_alarm", "signatures", "traceroute"] { | |
| mutate { add_field => { "[@meta][event_type]" => "detection" } } | |
| } else if [@meta][stream] in [ "capture_loss", "cluster", "communication", "loaded_scripts", "packet_filter", "prof", "reporter", "stats", "stderr", "stdout" ] { | |
| mutate { add_field => { "[@meta][event_type]" => "diagnostic" } } | |
| } else if [@meta][stream] in ["netcontrol", "netcontrol_drop", "netcontrol_shunt", "netcontrol_catch_release", "openflow"] { | |
| mutate { add_field => { "[@meta][event_type]" => "netcontrol" } } | |
| } else if [@meta][stream] in ["known_certs", "known_devices", "known_hosts", "known_modbus", "known_services", "software"] { | |
| mutate { add_field => { "[@meta][event_type]" => "observations" } } | |
| } else if [@meta][stream] in ["barnyard2", "dpd", "unified2", "weird"] { | |
| mutate { add_field => { "[@meta][event_type]" => "miscellaneous" } } | |
| } else { | |
| # Network type | |
| mutate { | |
| add_field => { | |
| "[@meta][event_type]" => "network" | |
| } | |
| } | |
| cidr { | |
| address => [ "%{[id_orig_h]}" ] | |
| network => [ "0.0.0.0/32", "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "fc00::/7", "127.0.0.0/8", "::1/128","169.254.0.0/16", "fe80::/10","224.0.0.0/4", "ff00::/8","255.255.255.255/32" ] | |
| add_field => { "[@meta][orig_host_routable]" => "false" } | |
| } | |
| cidr { | |
| address => [ "%{[id_resp_h]}" ] | |
| network => [ "0.0.0.0/32", "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "fc00::/7", "127.0.0.0/8", "::1/128","169.254.0.0/16", "fe80::/10","224.0.0.0/4", "ff00::/8","255.255.255.255/32" ] | |
| add_field => { "[@meta][resp_host_routable]" => "false" } | |
| } | |
| if ![@meta][orig_host_routable] { | |
| mutate { | |
| add_field => { | |
| "[@meta][orig_host_routable]" => "true" | |
| } | |
| } | |
| } | |
| if ![@meta][resp_host_routable] { | |
| mutate { | |
| add_field => { | |
| "[@meta][resp_host_routable]" => "true" | |
| } | |
| } | |
| } | |
| if [@meta][orig_host_routable] == "true" { | |
| geoip { | |
| source => "id_orig_h" | |
| target => "[@meta][geoip_orig]" | |
| } | |
| } | |
| if [@meta][resp_host_routable] == "true" { | |
| geoip { | |
| source => "id_resp_h" | |
| target => "[@meta][geoip_resp]" | |
| } | |
| } | |
| mutate { | |
| convert => { | |
| "id_orig_p" => "integer" | |
| "id_resp_p" => "integer" | |
| } | |
| rename => { | |
| "uid" => "[@meta][id]" | |
| "id_orig_h" => "[@meta][orig_host]" | |
| "id_orig_p" => "[@meta][orig_port]" | |
| "id_resp_h" => "[@meta][resp_host]" | |
| "id_resp_p" => "[@meta][resp_port]" | |
| } | |
| } | |
| } | |
| # Tie related records | |
| mutate { add_field => { "[@meta][related_ids]" => [] }} | |
| if [uid] { | |
| mutate { merge => {"[@meta][related_ids]" => "uid" }} | |
| } | |
| if [fuid] { | |
| mutate { merge => {"[@meta][related_ids]" => "fuid" }} | |
| } | |
| if [related_fuids] { | |
| mutate { merge => { "[@meta][related_ids]" => "related_fuids" }} | |
| } | |
| if [orig_fuids] { | |
| mutate { merge => { "[@meta][related_ids]" => "orig_fuids" }} | |
| } | |
| if [resp_fuids] { | |
| mutate { merge => { "[@meta][related_ids]" => "resp_fuids" }} | |
| } | |
| if [conn_uids] { | |
| mutate { merge => { "[@meta][related_ids]" => "conn_uids" }} | |
| } | |
| if [cert_chain_fuids] { | |
| mutate { merge => { "[@meta][related_ids]" => "cert_chain_fuids" }} | |
| } | |
| mutate { add_field => {"[@metadata][stage]" => "broraw_kafka" } } | |
| } | |
| } | |
| output { | |
| kafka { | |
| codec => json | |
| topic_id => "bro-clean" | |
| bootstrap_servers => | |
| } | |
| if [@meta][event_type] == "network" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-network-%{[@meta][stream]}-%{+YYYY.MM.dd}' | |
| } | |
| } else if [@meta][event_type] == "netcontrol" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-netcontrol-%{+YYYY.MM.dd}' | |
| } | |
| } else if [@meta][event_type] == "observations" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-observations-%{+YYYY.MM.dd}' | |
| } | |
| } else if [@meta][event_type] == "miscellaneous" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-miscellaneous-%{+YYYY.MM.dd}' | |
| } | |
| } else if [@meta][event_type] == "detection" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-detection-%{+YYYY.MM.dd}' | |
| } else if [@meta][event_type] == "file" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-file-%{+YYYY.MM.dd}' | |
| } | |
| } else if [@meta][event_type] == "diagnostic" { | |
| elasticsearch { | |
| hosts => | |
| index => 'bro-diag-%{+YYYY.MM.dd}' | |
| } | |
| } | |
| } |
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