Microsoft Sentinel Analytic Rules
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AV detections related to Europium actors

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Id186970ee-5001-41c1-8c73-3178f75ce96a
RulenameAV detections related to Europium actors
DescriptionThis query looks for Microsoft Defender AV detections related to Europium actor.

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, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.

Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government
SeverityHigh
TacticsImpact
TechniquesT1486
Required data connectorsMicrosoftThreatProtection
KindScheduled
Query frequency1d
Query period1d
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/EuropiumAVHits.yaml
Version1.1.2
Arm template186970ee-5001-41c1-8c73-3178f75ce96a.json
Deploy To Azure
let Europium_threats = dynamic(["TrojanDropper:ASP/WebShell!MSR", "Trojan:Win32/BatRunGoXml", "DoS:Win64/WprJooblash", "Ransom:Win32/Eagle!MSR", "Trojan:Win32/Debitom.A"]);
DeviceInfo
| extend DeviceName = tolower(DeviceName)
| join kind=inner ( SecurityAlert
| where ProviderName == "MDATP"
| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
| where ThreatName in~ (Europium_threats) or ThreatFamilyName in~ (Europium_threats)
| extend CompromisedEntity = tolower(CompromisedEntity)
) on $left.DeviceName == $right.CompromisedEntity
| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
| extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
| extend HostNameDomain = iff(CompromisedEntity != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)
entityMappings:
- fieldMappings:
  - columnName: CompromisedEntity
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: NTDomain
  entityType: Host
- fieldMappings:
  - columnName: PublicIP
    identifier: Address
  entityType: IP
triggerThreshold: 0
severity: High
queryFrequency: 1d
queryPeriod: 1d
relevantTechniques:
- T1486
triggerOperator: gt
description: |
  'This query looks for Microsoft Defender AV detections related to  Europium actor. 
  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, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.
   Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government '  
id: 186970ee-5001-41c1-8c73-3178f75ce96a
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - SecurityAlert
  - DeviceInfo
version: 1.1.2
name: AV detections related to Europium actors
metadata:
  categories:
    domains:
    - Security - Threat Intelligence
  author:
    name: Microsoft Security Research
  support:
    tier: Community
  source:
    kind: Community
tags:
- Europium
query: |
  let Europium_threats = dynamic(["TrojanDropper:ASP/WebShell!MSR", "Trojan:Win32/BatRunGoXml", "DoS:Win64/WprJooblash", "Ransom:Win32/Eagle!MSR", "Trojan:Win32/Debitom.A"]);
  DeviceInfo
  | extend DeviceName = tolower(DeviceName)
  | join kind=inner ( SecurityAlert
  | where ProviderName == "MDATP"
  | extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)
  | extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)
  | where ThreatName in~ (Europium_threats) or ThreatFamilyName in~ (Europium_threats)
  | extend CompromisedEntity = tolower(CompromisedEntity)
  ) on $left.DeviceName == $right.CompromisedEntity
  | summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities
  | extend HostName = tostring(split(CompromisedEntity, ".")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))
  | extend HostNameDomain = iff(CompromisedEntity != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)  
tactics:
- Impact
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/EuropiumAVHits.yaml
kind: Scheduled
{
  "$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/186970ee-5001-41c1-8c73-3178f75ce96a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/186970ee-5001-41c1-8c73-3178f75ce96a')]",
      "properties": {
        "alertRuleTemplateName": "186970ee-5001-41c1-8c73-3178f75ce96a",
        "customDetails": null,
        "description": "'This query looks for Microsoft Defender AV detections related to  Europium actor. \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, etc. This would allow the Microsoft Sentinel analyst to have more context related to the alert, if available.\n Reference: https://www.microsoft.com/security/blog/2022/09/08/microsoft-investigates-iranian-attacks-against-the-albanian-government '\n",
        "displayName": "AV detections related to Europium actors",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "CompromisedEntity",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "NTDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "PublicIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/SecurityAlert/EuropiumAVHits.yaml",
        "query": "let Europium_threats = dynamic([\"TrojanDropper:ASP/WebShell!MSR\", \"Trojan:Win32/BatRunGoXml\", \"DoS:Win64/WprJooblash\", \"Ransom:Win32/Eagle!MSR\", \"Trojan:Win32/Debitom.A\"]);\nDeviceInfo\n| extend DeviceName = tolower(DeviceName)\n| join kind=inner ( SecurityAlert\n| where ProviderName == \"MDATP\"\n| extend ThreatName = tostring(parse_json(ExtendedProperties).ThreatName)\n| extend ThreatFamilyName = tostring(parse_json(ExtendedProperties).ThreatFamilyName)\n| where ThreatName in~ (Europium_threats) or ThreatFamilyName in~ (Europium_threats)\n| extend CompromisedEntity = tolower(CompromisedEntity)\n) on $left.DeviceName == $right.CompromisedEntity\n| summarize by DisplayName, ThreatName, ThreatFamilyName, PublicIP, AlertSeverity, Description, tostring(LoggedOnUsers), DeviceId, TenantId, bin(TimeGenerated, 1d), CompromisedEntity, tostring(LoggedOnUsers), ProductName, Entities\n| extend HostName = tostring(split(CompromisedEntity, \".\")[0]), DomainIndex = toint(indexof(CompromisedEntity, '.'))\n| extend HostNameDomain = iff(CompromisedEntity != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "tags": [
          "Europium"
        ],
        "techniques": [
          "T1486"
        ],
        "templateVersion": "1.1.2",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}