Corelight - External Proxy Detected
Id | 05850746-9ae4-412f-838b-844f0903f4a9 |
Rulename | Corelight - External Proxy Detected |
Description | Detects external proxy usage. |
Severity | Low |
Tactics | DefenseEvasion CommandAndControl |
Techniques | T1090 |
Required data connectors | Corelight |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Corelight/Analytic Rules/CorelightExternalProxyDetected.yaml |
Version | 1.0.0 |
Arm template | 05850746-9ae4-412f-838b-844f0903f4a9.json |
Corelight
| where EventType =~ 'http'
| where isnotempty(HttpProxiedHeaders)
| where ipv4_is_private(SrcIpAddr) == 'False'
| extend IPCustomEntity = SrcIpAddr
severity: Low
triggerThreshold: 0
query: |
Corelight
| where EventType =~ 'http'
| where isnotempty(HttpProxiedHeaders)
| where ipv4_is_private(SrcIpAddr) == 'False'
| extend IPCustomEntity = SrcIpAddr
queryFrequency: 1h
requiredDataConnectors:
- connectorId: Corelight
dataTypes:
- Corelight
id: 05850746-9ae4-412f-838b-844f0903f4a9
version: 1.0.0
name: Corelight - External Proxy Detected
kind: Scheduled
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Corelight/Analytic Rules/CorelightExternalProxyDetected.yaml
queryPeriod: 1h
relevantTechniques:
- T1090
triggerOperator: gt
tactics:
- DefenseEvasion
- CommandAndControl
description: |
'Detects external proxy usage.'
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/05850746-9ae4-412f-838b-844f0903f4a9')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/05850746-9ae4-412f-838b-844f0903f4a9')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01",
"properties": {
"displayName": "Corelight - External Proxy Detected",
"description": "'Detects external proxy usage.'\n",
"severity": "Low",
"enabled": true,
"query": "Corelight\n| where EventType =~ 'http'\n| where isnotempty(HttpProxiedHeaders)\n| where ipv4_is_private(SrcIpAddr) == 'False'\n| extend IPCustomEntity = SrcIpAddr\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"DefenseEvasion",
"CommandAndControl"
],
"techniques": [
"T1090"
],
"alertRuleTemplateName": "05850746-9ae4-412f-838b-844f0903f4a9",
"customDetails": null,
"entityMappings": [
{
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
],
"entityType": "IP"
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Corelight/Analytic Rules/CorelightExternalProxyDetected.yaml",
"templateVersion": "1.0.0",
"status": "Available"
}
}
]
}