Azure DevOps New Extension Added
Id | bf07ca9c-e408-443a-8939-6860a45a929e |
Rulename | Azure DevOps New Extension Added |
Description | Extensions add additional features to Azure DevOps. An attacker could use a malicious extension to conduct malicious activity. This query looks for new extensions that are not from a configurable list of approved publishers. |
Severity | Low |
Tactics | Persistence |
Techniques | T1505 |
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/AzureDevOpsAuditing/Analytic Rules/ADONewExtensionAdded.yaml |
Version | 1.0.3 |
Arm template | bf07ca9c-e408-443a-8939-6860a45a929e.json |
let allowed_publishers = dynamic([]);
AzureDevOpsAuditing
| where OperationName =~ "Extension.Installed"
| extend ExtensionName = tostring(Data.ExtensionName)
| extend PublisherName = tostring(Data.PublisherName)
| where PublisherName !in (allowed_publishers)
| project-reorder TimeGenerated, OperationName, ExtensionName, PublisherName, ActorUPN, IpAddress, UserAgent, ScopeDisplayName, Data
| extend timestamp = TimeGenerated
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])
tactics:
- Persistence
query: |
let allowed_publishers = dynamic([]);
AzureDevOpsAuditing
| where OperationName =~ "Extension.Installed"
| extend ExtensionName = tostring(Data.ExtensionName)
| extend PublisherName = tostring(Data.PublisherName)
| where PublisherName !in (allowed_publishers)
| project-reorder TimeGenerated, OperationName, ExtensionName, PublisherName, ActorUPN, IpAddress, UserAgent, ScopeDisplayName, Data
| extend timestamp = TimeGenerated
| extend AccountName = tostring(split(ActorUPN, "@")[0]), AccountUPNSuffix = tostring(split(ActorUPN, "@")[1])
queryFrequency: 1d
entityMappings:
- fieldMappings:
- identifier: FullName
columnName: ActorUPN
- identifier: Name
columnName: AccountName
- identifier: UPNSuffix
columnName: AccountUPNSuffix
entityType: Account
- fieldMappings:
- identifier: Address
columnName: IpAddress
entityType: IP
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AzureDevOpsAuditing/Analytic Rules/ADONewExtensionAdded.yaml
queryPeriod: 1d
kind: Scheduled
version: 1.0.3
triggerOperator: gt
status: Available
relevantTechniques:
- T1505
name: Azure DevOps New Extension Added
triggerThreshold: 0
severity: Low
description: |
'Extensions add additional features to Azure DevOps. An attacker could use a malicious extension to conduct malicious activity.
This query looks for new extensions that are not from a configurable list of approved publishers.'
requiredDataConnectors: []
id: bf07ca9c-e408-443a-8939-6860a45a929e
{
"$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
"contentVersion": "1.0.0.0",
"parameters": {
"workspace": {
"type": "String"
}
},
"resources": [
{
"apiVersion": "2024-01-01-preview",
"id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/bf07ca9c-e408-443a-8939-6860a45a929e')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/bf07ca9c-e408-443a-8939-6860a45a929e')]",
"properties": {
"alertRuleTemplateName": "bf07ca9c-e408-443a-8939-6860a45a929e",
"customDetails": null,
"description": "'Extensions add additional features to Azure DevOps. An attacker could use a malicious extension to conduct malicious activity. \nThis query looks for new extensions that are not from a configurable list of approved publishers.'\n",
"displayName": "Azure DevOps New Extension Added",
"enabled": true,
"entityMappings": [
{
"entityType": "Account",
"fieldMappings": [
{
"columnName": "ActorUPN",
"identifier": "FullName"
},
{
"columnName": "AccountName",
"identifier": "Name"
},
{
"columnName": "AccountUPNSuffix",
"identifier": "UPNSuffix"
}
]
},
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IpAddress",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/AzureDevOpsAuditing/Analytic Rules/ADONewExtensionAdded.yaml",
"query": "let allowed_publishers = dynamic([]);\nAzureDevOpsAuditing\n| where OperationName =~ \"Extension.Installed\"\n| extend ExtensionName = tostring(Data.ExtensionName)\n| extend PublisherName = tostring(Data.PublisherName)\n| where PublisherName !in (allowed_publishers)\n| project-reorder TimeGenerated, OperationName, ExtensionName, PublisherName, ActorUPN, IpAddress, UserAgent, ScopeDisplayName, Data\n| extend timestamp = TimeGenerated\n| extend AccountName = tostring(split(ActorUPN, \"@\")[0]), AccountUPNSuffix = tostring(split(ActorUPN, \"@\")[1])\n",
"queryFrequency": "P1D",
"queryPeriod": "P1D",
"severity": "Low",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"Persistence"
],
"techniques": [
"T1505"
],
"templateVersion": "1.0.3",
"triggerOperator": "GreaterThan",
"triggerThreshold": 0
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}