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Populate dns.type in Zeek pipeline (#13422)
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Mathieu Martin authored Aug 29, 2019
1 parent 9de517e commit fe083ef
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Showing 3 changed files with 103 additions and 0 deletions.
10 changes: 10 additions & 0 deletions x-pack/filebeat/module/zeek/dns/config/dns.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,15 @@ processors:
}
}
function setDnsType(evt) {
var response_code = evt.Get("zeek.dns.rcode_name");
if (response_code) {
evt.Put("dns.type", "answer");
} else {
evt.Put("dns.type", "query");
}
}
function addEventDuration(evt) {
var rttSec = evt.Get("zeek.dns.rtt");
if (!rttSec) {
Expand All @@ -100,6 +109,7 @@ processors:
addDnsHeaderFlags(evt);
addDnsQuestionClass(evt);
addDnsAnswers(evt);
setDnsType(evt);
addEventDuration(evt);
}
- convert:
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2 changes: 2 additions & 0 deletions x-pack/filebeat/module/zeek/dns/test/dns-json.log
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@@ -1 +1,3 @@
{"ts":1547188415.857497,"uid":"CAcJw21BbVedgFnYH3","id.orig_h":"192.168.86.167","id.orig_p":38339,"id.resp_h":"192.168.86.1","id.resp_p":53,"proto":"udp","trans_id":15209,"rtt":0.076967,"query":"dd625ffb4fc54735b281862aa1cd6cd4.us-west1.gcp.cloud.es.io","qclass":1,"qclass_name":"C_INTERNET","qtype":1,"qtype_name":"A","rcode":0,"rcode_name":"NOERROR","AA":false,"TC":false,"RD":true,"RA":true,"Z":0,"answers":["proxy-production-us-west1.gcp.cloud.es.io","proxy-production-us-west1-v1-009.gcp.cloud.es.io","35.199.178.4"],"TTLs":[119.0,119.0,59.0],"rejected":false}
{"ts":1567095830.680046,"uid":"C19a1k4lTv46YMbeOk","id.orig_h":"fe80::4ef:15cf:769f:ff21","id.orig_p":5353,"id.resp_h":"ff02::fb","id.resp_p":5353,"proto":"udp","trans_id":0,"query":"_googlecast._tcp.local","qclass":1,"qclass_name":"C_INTERNET","qtype":12,"qtype_name":"PTR","AA":false,"TC":false,"RD":false,"RA":false,"Z":0,"rejected":false}
{"ts":1567095830.734329,"uid":"CdiVAw7jJw6gsX5H","id.orig_h":"192.168.86.237","id.orig_p":5353,"id.resp_h":"224.0.0.251","id.resp_p":5353,"proto":"udp","trans_id":0,"query":"_googlecast._tcp.local","rcode":0,"rcode_name":"NOERROR","AA":true,"TC":false,"RD":false,"RA":false,"Z":0,"answers":["bravia-4k-gb-5c89f865c9d569ab338815b35e3acc56._googlecast._tcp.local"],"TTLs":[120.0],"rejected":false}
91 changes: 91 additions & 0 deletions x-pack/filebeat/module/zeek/dns/test/dns-json.log-expected.json
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Expand Up @@ -31,6 +31,7 @@
"35.199.178.4"
],
"dns.response_code": "NOERROR",
"dns.type": "answer",
"event.dataset": "zeek.dns",
"event.duration": 76967000,
"event.id": "CAcJw21BbVedgFnYH3",
Expand Down Expand Up @@ -73,5 +74,95 @@
"zeek.dns.rtt": 0.076967,
"zeek.dns.trans_id": 15209,
"zeek.session_id": "CAcJw21BbVedgFnYH3"
},
{
"@timestamp": "2019-08-29T16:23:50.680Z",
"destination.address": "ff02::fb",
"destination.ip": "ff02::fb",
"destination.port": 5353,
"dns.id": 0,
"dns.question.class": "IN",
"dns.question.name": "_googlecast._tcp.local",
"dns.question.registered_domain": "_tcp.local",
"dns.question.type": "PTR",
"dns.type": "query",
"event.dataset": "zeek.dns",
"event.id": "C19a1k4lTv46YMbeOk",
"event.module": "zeek",
"event.original": "{\"ts\":1567095830.680046,\"uid\":\"C19a1k4lTv46YMbeOk\",\"id.orig_h\":\"fe80::4ef:15cf:769f:ff21\",\"id.orig_p\":5353,\"id.resp_h\":\"ff02::fb\",\"id.resp_p\":5353,\"proto\":\"udp\",\"trans_id\":0,\"query\":\"_googlecast._tcp.local\",\"qclass\":1,\"qclass_name\":\"C_INTERNET\",\"qtype\":12,\"qtype_name\":\"PTR\",\"AA\":false,\"TC\":false,\"RD\":false,\"RA\":false,\"Z\":0,\"rejected\":false}",
"fileset.name": "dns",
"input.type": "log",
"log.offset": 566,
"network.community_id": "1:Jq0sRtlGSMjsvMBE1ZYybbR2tI0=",
"network.transport": "udp",
"service.type": "zeek",
"source.address": "fe80::4ef:15cf:769f:ff21",
"source.ip": "fe80::4ef:15cf:769f:ff21",
"source.port": 5353,
"tags": [
"zeek.dns"
],
"zeek.dns.AA": false,
"zeek.dns.RA": false,
"zeek.dns.RD": false,
"zeek.dns.TC": false,
"zeek.dns.qclass": 1,
"zeek.dns.qclass_name": "C_INTERNET",
"zeek.dns.qtype": 12,
"zeek.dns.qtype_name": "PTR",
"zeek.dns.query": "_googlecast._tcp.local",
"zeek.dns.rejected": false,
"zeek.dns.trans_id": 0,
"zeek.session_id": "C19a1k4lTv46YMbeOk"
},
{
"@timestamp": "2019-08-29T16:23:50.734Z",
"destination.address": "224.0.0.251",
"destination.ip": "224.0.0.251",
"destination.port": 5353,
"dns.answers": [
{
"data": "bravia-4k-gb-5c89f865c9d569ab338815b35e3acc56._googlecast._tcp.local",
"ttl": 120
}
],
"dns.header_flags": "AA",
"dns.id": 0,
"dns.question.name": "_googlecast._tcp.local",
"dns.question.registered_domain": "_tcp.local",
"dns.response_code": "NOERROR",
"dns.type": "answer",
"event.dataset": "zeek.dns",
"event.id": "CdiVAw7jJw6gsX5H",
"event.module": "zeek",
"event.original": "{\"ts\":1567095830.734329,\"uid\":\"CdiVAw7jJw6gsX5H\",\"id.orig_h\":\"192.168.86.237\",\"id.orig_p\":5353,\"id.resp_h\":\"224.0.0.251\",\"id.resp_p\":5353,\"proto\":\"udp\",\"trans_id\":0,\"query\":\"_googlecast._tcp.local\",\"rcode\":0,\"rcode_name\":\"NOERROR\",\"AA\":true,\"TC\":false,\"RD\":false,\"RA\":false,\"Z\":0,\"answers\":[\"bravia-4k-gb-5c89f865c9d569ab338815b35e3acc56._googlecast._tcp.local\"],\"TTLs\":[120.0],\"rejected\":false}",
"fileset.name": "dns",
"input.type": "log",
"log.offset": 909,
"network.community_id": "1:QIR5YXlirWwWA18ZyY/RnvQoaic=",
"network.transport": "udp",
"service.type": "zeek",
"source.address": "192.168.86.237",
"source.ip": "192.168.86.237",
"source.port": 5353,
"tags": [
"zeek.dns"
],
"zeek.dns.AA": true,
"zeek.dns.RA": false,
"zeek.dns.RD": false,
"zeek.dns.TC": false,
"zeek.dns.TTLs": [
120
],
"zeek.dns.answers": [
"bravia-4k-gb-5c89f865c9d569ab338815b35e3acc56._googlecast._tcp.local"
],
"zeek.dns.query": "_googlecast._tcp.local",
"zeek.dns.rcode": 0,
"zeek.dns.rcode_name": "NOERROR",
"zeek.dns.rejected": false,
"zeek.dns.trans_id": 0,
"zeek.session_id": "CdiVAw7jJw6gsX5H"
}
]

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