New CloudShell User
Id | 6d7214d9-4a28-44df-aafb-0910b9e6ae3e |
Rulename | New CloudShell User |
Description | Identifies when a user creates an Azure CloudShell for the first time. Monitor this activity to ensure only expected user are using CloudShell |
Severity | Low |
Tactics | Execution |
Techniques | T1059 |
Required data connectors | AzureActivity |
Kind | Scheduled |
Query frequency | 1d |
Query period | 1d |
Trigger threshold | 0 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Activity/Analytic Rules/New-CloudShell-User.yaml |
Version | 2.0.1 |
Arm template | 6d7214d9-4a28-44df-aafb-0910b9e6ae3e.json |
let match_window = 3m;
AzureActivity
| where ResourceGroup has "cloud-shell"
| where (OperationNameValue =~ "Microsoft.Storage/storageAccounts/listKeys/action")
| where ActivityStatusValue == "Success"
| extend TimeKey = bin(TimeGenerated, match_window), AzureIP = CallerIpAddress
| join kind = inner
(AzureActivity
| where ResourceGroup has "cloud-shell"
| where (OperationNameValue =~ "Microsoft.Storage/storageAccounts/write")
| extend TimeKey = bin(TimeGenerated, match_window), UserIP = CallerIpAddress
) on Caller, TimeKey
| summarize count() by TimeKey, Caller, ResourceGroup, SubscriptionId, TenantId, AzureIP, UserIP, HTTPRequest, Type, Properties, CategoryValue, OperationList = strcat(OperationNameValue, ' , ', OperationNameValue1)
queryFrequency: 1d
entityMappings:
- entityType: Account
fieldMappings:
- columnName: Caller
identifier: FullName
- entityType: IP
fieldMappings:
- columnName: UserIP
identifier: Address
severity: Low
triggerThreshold: 0
relevantTechniques:
- T1059
query: |
let match_window = 3m;
AzureActivity
| where ResourceGroup has "cloud-shell"
| where (OperationNameValue =~ "Microsoft.Storage/storageAccounts/listKeys/action")
| where ActivityStatusValue == "Success"
| extend TimeKey = bin(TimeGenerated, match_window), AzureIP = CallerIpAddress
| join kind = inner
(AzureActivity
| where ResourceGroup has "cloud-shell"
| where (OperationNameValue =~ "Microsoft.Storage/storageAccounts/write")
| extend TimeKey = bin(TimeGenerated, match_window), UserIP = CallerIpAddress
) on Caller, TimeKey
| summarize count() by TimeKey, Caller, ResourceGroup, SubscriptionId, TenantId, AzureIP, UserIP, HTTPRequest, Type, Properties, CategoryValue, OperationList = strcat(OperationNameValue, ' , ', OperationNameValue1)
id: 6d7214d9-4a28-44df-aafb-0910b9e6ae3e
triggerOperator: gt
version: 2.0.1
requiredDataConnectors:
- connectorId: AzureActivity
dataTypes:
- AzureActivity
description: |
'Identifies when a user creates an Azure CloudShell for the first time.
Monitor this activity to ensure only expected user are using CloudShell'
queryPeriod: 1d
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Activity/Analytic Rules/New-CloudShell-User.yaml
status: Available
name: New CloudShell User
tactics:
- Execution
kind: Scheduled
{
"$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/6d7214d9-4a28-44df-aafb-0910b9e6ae3e')]",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6d7214d9-4a28-44df-aafb-0910b9e6ae3e')]",
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules",
"kind": "Scheduled",
"apiVersion": "2022-11-01",
"properties": {
"displayName": "New CloudShell User",
"description": "'Identifies when a user creates an Azure CloudShell for the first time.\nMonitor this activity to ensure only expected user are using CloudShell'\n",
"severity": "Low",
"enabled": true,
"query": "let match_window = 3m;\nAzureActivity\n| where ResourceGroup has \"cloud-shell\"\n| where (OperationNameValue =~ \"Microsoft.Storage/storageAccounts/listKeys/action\")\n| where ActivityStatusValue == \"Success\"\n| extend TimeKey = bin(TimeGenerated, match_window), AzureIP = CallerIpAddress\n| join kind = inner\n(AzureActivity\n| where ResourceGroup has \"cloud-shell\"\n| where (OperationNameValue =~ \"Microsoft.Storage/storageAccounts/write\")\n| extend TimeKey = bin(TimeGenerated, match_window), UserIP = CallerIpAddress\n) on Caller, TimeKey\n| summarize count() by TimeKey, Caller, ResourceGroup, SubscriptionId, TenantId, AzureIP, UserIP, HTTPRequest, Type, Properties, CategoryValue, OperationList = strcat(OperationNameValue, ' , ', OperationNameValue1)\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0,
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Execution"
],
"techniques": [
"T1059"
],
"alertRuleTemplateName": "6d7214d9-4a28-44df-aafb-0910b9e6ae3e",
"customDetails": null,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"identifier": "FullName",
"columnName": "Caller"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"identifier": "Address",
"columnName": "UserIP"
}
]
}
],
"status": "Available",
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Azure Activity/Analytic Rules/New-CloudShell-User.yaml",
"templateVersion": "2.0.1"
}
}
]
}