AV detections related to Dev-0530 actors

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Id	5f171045-88ab-4634-baae-a7b6509f483b
Rulename	AV detections related to Dev-0530 actors
Description	This query looks for Microsoft Defender AV detections related to Dev-0530 actors. In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
Severity	High
Tactics	Impact
Techniques	T1486
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Dev-0530AVHits.yaml
Version	1.0.5
Arm template	5f171045-88ab-4634-baae-a7b6509f483b.json

KQL

let Dev0530_threats = dynamic(["Trojan:Win32/SiennaPurple.A", "Ransom:Win32/SiennaBlue.A", "Ransom:Win32/SiennaBlue.B"]);
SecurityAlert
| where ProviderName == "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Dev0530_threats) or ThreatFamilyName in~ (Dev0530_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
| join kind=inner (DeviceInfo
    | extend DeviceName = tolower(DeviceName)
) on $left.CompromisedEntity == $right.DeviceName
| summarize by bin(TimeGenerated, 1d), DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
| project-away DomainIndex

YAML

triggerOperator: gt
triggerThreshold: 0
name: AV detections related to Dev-0530 actors
metadata:
  support:
    tier: Community
  categories:
    domains:
    - Security - Others
  source:
    kind: Community
  author:
    name: Microsoft Security Research
queryPeriod: 1d
severity: High
tags:
- Dev-0530 actors
kind: Scheduled
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: CompromisedEntity
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: DnsDomain
- entityType: IP
  fieldMappings:
  - columnName: PublicIP
    identifier: Address
queryFrequency: 1d
relevantTechniques:
- T1486
requiredDataConnectors:
- dataTypes:
  - SecurityAlert
  connectorId: MicrosoftThreatProtection
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Dev-0530AVHits.yaml
description: |
  'This query looks for Microsoft Defender AV detections related to  Dev-0530 actors.
  In Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'  
tactics:
- Impact
query: |
  let Dev0530_threats = dynamic(["Trojan:Win32/SiennaPurple.A", "Ransom:Win32/SiennaBlue.A", "Ransom:Win32/SiennaBlue.B"]);
  SecurityAlert
  | where ProviderName == "MDATP"
  | extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
  | extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
  | where ThreatName in~ (Dev0530_threats) or ThreatFamilyName in~ (Dev0530_threats)
  | extend CompromisedEntity = tolower(CompromisedEntity)
  | join kind=inner (DeviceInfo
      | extend DeviceName = tolower(DeviceName)
  ) on $left.CompromisedEntity == $right.DeviceName
  | summarize by bin(TimeGenerated, 1d), DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
  | extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
  | extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
  | project-away DomainIndex  
id: 5f171045-88ab-4634-baae-a7b6509f483b
version: 1.0.5

ARM

{
  "$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/5f171045-88ab-4634-baae-a7b6509f483b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/5f171045-88ab-4634-baae-a7b6509f483b')]",
      "properties": {
        "alertRuleTemplateName": "5f171045-88ab-4634-baae-a7b6509f483b",
        "customDetails": null,
        "description": "'This query looks for Microsoft Defender AV detections related to  Dev-0530 actors.\nIn Microsoft Sentinel the SecurityAlerts table includes only the Device Name of the affected device, this query joins the DeviceInfo table to clearly connect other information such as Device group, ip, logged on users etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.'\n",
        "displayName": "AV detections related to Dev-0530 actors",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "CompromisedEntity",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "PublicIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/Dev-0530AVHits.yaml",
        "query": "let Dev0530_threats = dynamic([\"Trojan:Win32/SiennaPurple.A\", \"Ransom:Win32/SiennaBlue.A\", \"Ransom:Win32/SiennaBlue.B\"]);\nSecurityAlert\n| where ProviderName == \"MDATP\"\n| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)\n| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)\n| where ThreatName in~ (Dev0530_threats) or ThreatFamilyName in~ (Dev0530_threats)\n| extend CompromisedEntity = tolower(CompromisedEntity)\n| join kind=inner (DeviceInfo\n    | extend DeviceName = tolower(DeviceName)\n) on $left.CompromisedEntity == $right.DeviceName\n| summarize by bin(TimeGenerated, 1d), DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities\n| extend HostName = tostring(split(CompromisedEntity, \".\")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))\n| extend HostNameDomain = iff(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)\n| project-away DomainIndex\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "tags": [
          "Dev-0530 actors"
        ],
        "techniques": [
          "T1486"
        ],
        "templateVersion": "1.0.5",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}