TI map IP entity to GitHub_CL
Id | aac495a9-feb1-446d-b08e-a1164a539452 |
Rulename | TI map IP entity to GitHub_CL |
Description | Identifies a match in GitHub_CL table from any IP IOC from TI |
Severity | Medium |
Tactics | Impact |
Required data connectors | MicrosoftDefenderThreatIntelligence ThreatIntelligence ThreatIntelligenceTaxii |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1d |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/Threat Intel Matches to GitHub Audit Logs.yaml |
Version | 1.0.2 |
Arm template | aac495a9-feb1-446d-b08e-a1164a539452.json |
ThreatIntelligenceIndicator
| where Action == true
// Picking up only IOC's that contain the entities we want
| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
// Taking the first non-empty value based on potential IOC match availability
| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
| join (
GitHubAudit
| extend GitHubAudit_TimeGenerated = TimeGenerated
)
on $left.TI_ipEntity == $right.IPaddress
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, GitHubAudit_TimeGenerated, TI_ipEntity, IPaddress, Actor, Action, Country, OperationType, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
| extend timestamp = GitHubAudit_TimeGenerated, IPCustomEntity = IPaddress, AccountCustomEntity = Actor
severity: Medium
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/Threat Intel Matches to GitHub Audit Logs.yaml
description: |
'Identifies a match in GitHub_CL table from any IP IOC from TI'
triggerOperator: gt
queryPeriod: 1d
requiredDataConnectors:
- dataTypes:
- ThreatIntelligenceIndicator
connectorId: ThreatIntelligence
- dataTypes:
- ThreatIntelligenceIndicator
connectorId: ThreatIntelligenceTaxii
- dataTypes:
- ThreatIntelligenceIndicator
connectorId: MicrosoftDefenderThreatIntelligence
queryFrequency: 1h
triggerThreshold: 0
tactics:
- Impact
query: |
ThreatIntelligenceIndicator
| where Action == true
// Picking up only IOC's that contain the entities we want
| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
// Taking the first non-empty value based on potential IOC match availability
| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)
| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)
| join (
GitHubAudit
| extend GitHubAudit_TimeGenerated = TimeGenerated
)
on $left.TI_ipEntity == $right.IPaddress
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, GitHubAudit_TimeGenerated, TI_ipEntity, IPaddress, Actor, Action, Country, OperationType, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress
| extend timestamp = GitHubAudit_TimeGenerated, IPCustomEntity = IPaddress, AccountCustomEntity = Actor
kind: Scheduled
version: 1.0.2
id: aac495a9-feb1-446d-b08e-a1164a539452
entityMappings:
- fieldMappings:
- columnName: AccountCustomEntity
identifier: FullName
entityType: Account
- fieldMappings:
- columnName: IPCustomEntity
identifier: Address
entityType: IP
name: TI map IP entity to GitHub_CL
{
"$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/aac495a9-feb1-446d-b08e-a1164a539452')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/aac495a9-feb1-446d-b08e-a1164a539452')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "TI map IP entity to GitHub_CL",
"description": "'Identifies a match in GitHub_CL table from any IP IOC from TI'\n",
"severity": "Medium",
"enabled": true,
"query": "ThreatIntelligenceIndicator\n| where Action == true\n// Picking up only IOC's that contain the entities we want\n| where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)\n// Taking the first non-empty value based on potential IOC match availability\n| extend TI_ipEntity = iff(isnotempty(NetworkIP), NetworkIP, NetworkDestinationIP)\n| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(NetworkSourceIP), NetworkSourceIP, TI_ipEntity)\n| extend TI_ipEntity = iff(isempty(TI_ipEntity) and isnotempty(EmailSourceIpAddress), EmailSourceIpAddress, TI_ipEntity)\n| join (\n GitHubAudit\n | extend GitHubAudit_TimeGenerated = TimeGenerated\n)\non $left.TI_ipEntity == $right.IPaddress\n| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n| project LatestIndicatorTime, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, GitHubAudit_TimeGenerated, TI_ipEntity, IPaddress, Actor, Action, Country, OperationType, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress\n| extend timestamp = GitHubAudit_TimeGenerated, IPCustomEntity = IPaddress, AccountCustomEntity = Actor\n",
"queryFrequency": "PT1H",
"queryPeriod": "P1D",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Impact"
],
"alertRuleTemplateName": "aac495a9-feb1-446d-b08e-a1164a539452",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "AccountCustomEntity",
"identifier": "FullName"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
}
],
"templateVersion": "1.0.2",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/Threat Intel Matches to GitHub Audit Logs.yaml"
}
}
]
}