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azure: add Grok processor for AzureFirewallThreatIntelLog #13921

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azure: add Grok processor for AzureFirewallThreatIntelLog
JulienOrain May 15, 2025
58d7975
Update packages/azure/changelog.yml
JulienOrain May 16, 2025
3725440
add tests
JulienOrain May 16, 2025
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5 changes: 5 additions & 0 deletions packages/azure/changelog.yml
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Original file line number Diff line number Diff line change
@@ -1,3 +1,8 @@
- version: "1.24.0"
changes:
- description: Add Grok processor for `AzureFirewallThreatIntelLog` in `azure.firewall_logs`.
type: enhancement
link: https://github.com/elastic/integrations/pull/13921
- version: "1.23.2"
changes:
- description: Fix Grok processor error in ingest pipeline for `AzureFirewallNetworkRuleLog` in `azure.firewall_logs`.
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1 change: 1 addition & 0 deletions packages/azure/data_stream/firewall_logs/_dev/test/pipeline/test-threatintel-raw.log
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{"category":"AZFWThreatIntel","properties":{"Action":"Deny","DestinationIp":"175.16.199.1","DestinationPort":443,"Fqdn":"","IsTlsInspected":false,"Protocol":"TCP","SourceIp":"192.168.0.2","SourcePort":51890,"ThreatDescription":"Destination reported by Threat Intelligence","Url":""},"resourceId":"/SUBSCRIPTIONS/23103928-B2CF-472A-8CDB-0146E2849129/RESOURCEGROUPS/TEST-FW-RG/PROVIDERS/MICROSOFT.NETWORK/AZUREFIREWALLS/TEST-FW01","time":"2025-05-16T07:34:42.525499+00:00"}
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This does not test the change; it does not have a properties.msg field and does not have an operationName field to make the condition for the grok processor ever fire.

75 changes: 75 additions & 0 deletions ...azure/data_stream/firewall_logs/_dev/test/pipeline/test-threatintel-raw.log-expected.json
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{
"expected": [
{
"@timestamp": "2025-05-16T07:34:42.525Z",
"azure": {
"firewall": {
"category": "AZFWThreatIntel",
"is_tls_inspected": false
},
"resource": {
"group": "TEST-FW-RG",
"id": "/SUBSCRIPTIONS/23103928-B2CF-472A-8CDB-0146E2849129/RESOURCEGROUPS/TEST-FW-RG/PROVIDERS/MICROSOFT.NETWORK/AZUREFIREWALLS/TEST-FW01",
"name": "TEST-FW01",
"provider": "MICROSOFT.NETWORK/AZUREFIREWALLS"
},
"subscription_id": "23103928-B2CF-472A-8CDB-0146E2849129"
},
"cloud": {
"account": {
"id": "23103928-B2CF-472A-8CDB-0146E2849129"
},
"provider": "azure"
},
"destination": {
"geo": {
"city_name": "Changchun",
"continent_name": "Asia",
"country_iso_code": "CN",
"country_name": "China",
"location": {
"lat": 43.88,
"lon": 125.3228
},
"region_iso_code": "CN-22",
"region_name": "Jilin Sheng"
},
"ip": "175.16.199.1",
"port": 443
},
"ecs": {
"version": "8.11.0"
},
"event": {
"action": "Deny",
"category": [
"network"
],
"kind": "event",
"original": "{\"category\":\"AZFWThreatIntel\",\"properties\":{\"Action\":\"Deny\",\"DestinationIp\":\"175.16.199.1\",\"DestinationPort\":443,\"Fqdn\":\"\",\"IsTlsInspected\":false,\"Protocol\":\"TCP\",\"SourceIp\":\"192.168.0.2\",\"SourcePort\":51890,\"ThreatDescription\":\"Destination reported by Threat Intelligence\",\"Url\":\"\"},\"resourceId\":\"/SUBSCRIPTIONS/23103928-B2CF-472A-8CDB-0146E2849129/RESOURCEGROUPS/TEST-FW-RG/PROVIDERS/MICROSOFT.NETWORK/AZUREFIREWALLS/TEST-FW01\",\"time\":\"2025-05-16T07:34:42.525499+00:00\"}",
"type": [
"connection"
]
},
"observer": {
"name": "TEST-FW01",
"product": "Network Firewall",
"type": "firewall",
"vendor": "Azure"
},
"related": {
"ip": [
"192.168.0.2",
"175.16.199.1"
]
},
"source": {
"ip": "192.168.0.2",
"port": 51890
},
"tags": [
"preserve_original_event"
]
}
]
}
6 changes: 6 additions & 0 deletions packages/azure/data_stream/firewall_logs/elasticsearch/ingest_pipeline/default.yml
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Expand Up @@ -194,6 +194,12 @@ processors:
- "^%{DATA:azure.firewall.proto} request from %{IPORHOST:source.address}:%{NUMBER:source.port:long} to %{IPORHOST:destination.address}:%{NUMBER:destination.port:long}. Url: %{HOSTNAME:url.original}. Action: %{DATA:azure.firewall.action}. ThreatIntel: %{DATA:rule.name}$"
if: ctx?.json?.operationName == 'AzureFirewallNetworkRuleLog' || ctx?.json?.operationName == 'AzureFirewallNatRuleLog'

- grok:
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Please add a test that covers this case.

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Run pipeline tests for the package
--- Test results for package: azure - START ---
╭─────────┬───────────────┬───────────┬─────────────────────────────────────────────────────────────────────┬────────┬──────────────╮
│ PACKAGE │ DATA STREAM   │ TEST TYPE │ TEST NAME                                                           │ RESULT │ TIME ELAPSED │
├─────────┼───────────────┼───────────┼─────────────────────────────────────────────────────────────────────┼────────┼──────────────┤
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-applicationrules-raw.log)            │ PASS   │  330.67625ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-applicationrules-structured-raw.log) │ PASS   │ 294.189208ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-dnsproxy-structured-raw.log)         │ PASS   │ 289.398917ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-dnsproxyrules-raw.log)               │ PASS   │   321.9885ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-natrule-structured-raw.log)          │ PASS   │ 286.860292ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-networkrule-structured-raw.log)      │ PASS   │ 312.447292ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-networkrules-raw.log)                │ PASS   │  294.68775ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-sdh3075-raw.log)                     │ PASS   │  301.59275ms │
│ azure   │ firewall_logs │ pipeline  │ (ingest pipeline warnings test-threatintel-raw.log)                 │ PASS   │ 297.325167ms │
│ azure   │ firewall_logs │ pipeline  │ test-applicationrules-raw.log                                       │ PASS   │  127.56975ms │
│ azure   │ firewall_logs │ pipeline  │ test-applicationrules-structured-raw.log                            │ PASS   │     76.394ms │
│ azure   │ firewall_logs │ pipeline  │ test-dnsproxy-structured-raw.log                                    │ PASS   │   66.39725ms │
│ azure   │ firewall_logs │ pipeline  │ test-dnsproxyrules-raw.log                                          │ PASS   │  81.463458ms │
│ azure   │ firewall_logs │ pipeline  │ test-natrule-structured-raw.log                                     │ PASS   │  70.352875ms │
│ azure   │ firewall_logs │ pipeline  │ test-networkrule-structured-raw.log                                 │ PASS   │  69.035166ms │
│ azure   │ firewall_logs │ pipeline  │ test-networkrules-raw.log                                           │ PASS   │ 162.922875ms │
│ azure   │ firewall_logs │ pipeline  │ test-sdh3075-raw.log                                                │ PASS   │  69.803208ms │
│ azure   │ firewall_logs │ pipeline  │ test-threatintel-raw.log                                            │ PASS   │  61.601166ms │
╰─────────┴───────────────┴───────────┴─────────────────────────────────────────────────────────────────────┴────────┴──────────────╯
--- Test results for package: azure - END   ---
Done

field: json.properties.msg
patterns:
- "^%{DATA:azure.firewall.proto} request from %{IPORHOST:source.address}:%{NUMBER:source.port:long} to %{IPORHOST:destination.address}:%{NUMBER:destination.port:long}. Action: %{DATA:azure.firewall.action}. ThreatIntel: %{DATA:rule.name}$"
if: ctx?.json?.operationName == 'AzureFirewallThreatIntelLog'
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Suggested change
if: ctx?.json?.operationName == 'AzureFirewallThreatIntelLog'
if: ctx.json?.operationName == 'AzureFirewallThreatIntelLog'

ctx is always non-null.


- grok:
field: json.properties.msg
patterns:
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2 changes: 1 addition & 1 deletion packages/azure/manifest.yml
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@@ -1,6 +1,6 @@
name: azure
title: Azure Logs
version: "1.23.2"
version: "1.24.0"
description: This Elastic integration collects logs from Azure
type: integration
icons:
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