let TorNodes = (
externaldata (TorIP:string)
[h@'https://firewalliplists.gypthecat.com/lists/kusto/kusto-tor-exit.csv.zip']
with (ignoreFirstRecord=true));
AWSCloudTrail
| where SourceIpAddress in (TorNodes) and isempty(ErrorCode) and isempty(ErrorMessage)
| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName
queryPeriod: 1d
entityMappings:
- fieldMappings:
- columnName: AccountCustomEntity
identifier: FullName
entityType: Account
- fieldMappings:
- columnName: IPCustomEntity
identifier: Address
entityType: IP
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_APIfromTor.yaml
tactics:
- Execution
query: |
let TorNodes = (
externaldata (TorIP:string)
[h@'https://firewalliplists.gypthecat.com/lists/kusto/kusto-tor-exit.csv.zip']
with (ignoreFirstRecord=true));
AWSCloudTrail
| where SourceIpAddress in (TorNodes) and isempty(ErrorCode) and isempty(ErrorMessage)
| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))
| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName
description: |
'A successful API execution was detected from an IP address categorized as a TOR exit node by Threat Intelligence.'
queryFrequency: 1d
id: 0adab960-5565-4978-ba6d-044553e4acc4
status: Available
relevantTechniques:
- T1204
severity: High
version: 1.0.0
triggerThreshold: 0
kind: Scheduled
requiredDataConnectors:
- connectorId: AWS
dataTypes:
- AWSCloudTrail
name: Successful API executed from a Tor exit node
{
"$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/0adab960-5565-4978-ba6d-044553e4acc4')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0adab960-5565-4978-ba6d-044553e4acc4')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01-preview",
"properties": {
"displayName": "Successful API executed from a Tor exit node",
"description": "'A successful API execution was detected from an IP address categorized as a TOR exit node by Threat Intelligence.'\n",
"severity": "High",
"enabled": true,
"query": "let TorNodes = (\nexternaldata (TorIP:string)\n[h@'https://firewalliplists.gypthecat.com/lists/kusto/kusto-tor-exit.csv.zip']\nwith (ignoreFirstRecord=true));\nAWSCloudTrail\n| where SourceIpAddress in (TorNodes) and isempty(ErrorCode) and isempty(ErrorMessage)\n| extend UserIdentityUserName = iff(isnotempty(UserIdentityUserName), UserIdentityUserName, tostring(split(UserIdentityArn,'/')[-1]))\n| extend timestamp = TimeGenerated, IPCustomEntity = SourceIpAddress, AccountCustomEntity = UserIdentityUserName \n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Execution"
],
"techniques": [
"T1204"
],
"alertRuleTemplateName": "0adab960-5565-4978-ba6d-044553e4acc4",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "AccountCustomEntity"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"identifier": "Address",
"columnName": "IPCustomEntity"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Amazon Web Services/Analytic Rules/AWS_APIfromTor.yaml",
"templateVersion": "1.0.0",
"status": "Available"
}
}
]
}