CYFIRMA - Attack Surface - Malicious DomainIP Reputation High Rule

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Id	7ff6f6d7-9672-4567-99fc-cb8a58c3bce7
Rulename	CYFIRMA - Attack Surface - Malicious Domain/IP Reputation High Rule
Description	“This alert is raised when CYFIRMA detects a critical reputation score for an IP address linked to your infrastructure. The IP has been previously associated with hacking activity and web application attacks. Denied outbound traffic to a foreign country from a known Microsoft data center IP suggests potential misuse or compromise of cloud infrastructure.”
Severity	High
Tactics	InitialAccess CommandAndControl Reconnaissance Impact DefenseEvasion Exfiltration
Techniques	T1566.002 T1071.001 T1090.002 T1595.002 T1036.005 T1499 T1041
Required data connectors	CyfirmaAttackSurfaceAlertsConnector
Kind	Scheduled
Query frequency	5m
Query period	5m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPreputationsHighRule.yaml
Version	1.0.1
Arm template	7ff6f6d7-9672-4567-99fc-cb8a58c3bce7.json

KQL

// High Severity - Malicious Domain/IP Reputation Detected
let timeFrame = 5m;
CyfirmaASDomainIPReputationAlerts_CL
| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
| extend
    FirstSeen=first_seen,
    LastSeen=last_seen,
    RiskScore=risk_score,
    Domain=sub_domain,
    TopDomain=top_domain,
    NetworkIP=ip,
    AlertUID=alert_uid,
    UID=uid,
    Categories=categories,
    IPversion=ip_version,
    ISP=isp,
    ThreatActors=threat_actors,
    Country=country,
    LastUsersReported=last_users_reported,
    ProviderName='CYFIRMA',
    ProductName='DeCYFIR/DeTCT'
| project
    TimeGenerated,
    Domain,
    TopDomain,
    RiskScore,
    FirstSeen,
    LastSeen,
    NetworkIP,
    AlertUID,
    UID,
    Categories,
    IPversion,
    ISP,
    ThreatActors,
    Country,
    LastUsersReported,
    ProviderName,
    ProductName

YAML

kind: Scheduled
customDetails:
  ISP: ISP
  LastUsersReported: LastUsersReported
  AlertUID: AlertUID
  LastSeen: LastSeen
  TimeGenerated: TimeGenerated
  FirstSeen: FirstSeen
  RiskScore: RiskScore
  ThreatActors: ThreatActors
  Country: Country
  Categories: Categories
  UID: UID
  IPversion: IPversion
alertDetailsOverride:
  alertDisplayNameFormat: 'CYFIRMA - High Severity Malicious Domain/IP Reputation Alert - Domain: {{Domain}}, IP: {{NetworkIP}} '
  alertDescriptionFormat: 'CYFIRMA - High Severity Malicious Domain/IP Reputation Alert - Domain: {{Domain}}, IP: {{NetworkIP}} '
  alertDynamicProperties:
  - value: ProductName
    alertProperty: ProductName
  - value: ProviderName
    alertProperty: ProviderName
entityMappings:
- entityType: DNS
  fieldMappings:
  - columnName: Domain
    identifier: DomainName
- entityType: Host
  fieldMappings:
  - columnName: TopDomain
    identifier: HostName
  - columnName: Domain
    identifier: DnsDomain
- entityType: IP
  fieldMappings:
  - columnName: NetworkIP
    identifier: Address
description: |
  "This alert is raised when CYFIRMA detects a critical reputation score for an IP address linked to your infrastructure. 
  The IP has been previously associated with hacking activity and web application attacks. 
  Denied outbound traffic to a foreign country from a known Microsoft data center IP suggests potential misuse or compromise of cloud infrastructure."  
severity: High
queryFrequency: 5m
incidentConfiguration:
  groupingConfiguration:
    reopenClosedIncident: false
    matchingMethod: AllEntities
    lookbackDuration: PT5H
    enabled: false
  createIncident: true
triggerThreshold: 0
relevantTechniques:
- T1566.002
- T1071.001
- T1090.002
- T1595.002
- T1036.005
- T1499
- T1041
eventGroupingSettings:
  aggregationKind: AlertPerResult
status: Available
version: 1.0.1
name: CYFIRMA - Attack Surface - Malicious Domain/IP Reputation High Rule
id: 7ff6f6d7-9672-4567-99fc-cb8a58c3bce7
query: |
  // High Severity - Malicious Domain/IP Reputation Detected
  let timeFrame = 5m;
  CyfirmaASDomainIPReputationAlerts_CL
  | where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())
  | extend
      FirstSeen=first_seen,
      LastSeen=last_seen,
      RiskScore=risk_score,
      Domain=sub_domain,
      TopDomain=top_domain,
      NetworkIP=ip,
      AlertUID=alert_uid,
      UID=uid,
      Categories=categories,
      IPversion=ip_version,
      ISP=isp,
      ThreatActors=threat_actors,
      Country=country,
      LastUsersReported=last_users_reported,
      ProviderName='CYFIRMA',
      ProductName='DeCYFIR/DeTCT'
  | project
      TimeGenerated,
      Domain,
      TopDomain,
      RiskScore,
      FirstSeen,
      LastSeen,
      NetworkIP,
      AlertUID,
      UID,
      Categories,
      IPversion,
      ISP,
      ThreatActors,
      Country,
      LastUsersReported,
      ProviderName,
      ProductName  
requiredDataConnectors:
- dataTypes:
  - CyfirmaASDomainIPReputationAlerts_CL
  connectorId: CyfirmaAttackSurfaceAlertsConnector
tactics:
- InitialAccess
- CommandAndControl
- Reconnaissance
- Impact
- DefenseEvasion
- Exfiltration
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPreputationsHighRule.yaml
queryPeriod: 5m

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/7ff6f6d7-9672-4567-99fc-cb8a58c3bce7')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/7ff6f6d7-9672-4567-99fc-cb8a58c3bce7')]",
      "properties": {
        "alertDetailsOverride": {
          "alertDescriptionFormat": "CYFIRMA - High Severity Malicious Domain/IP Reputation Alert - Domain: {{Domain}}, IP: {{NetworkIP}} ",
          "alertDisplayNameFormat": "CYFIRMA - High Severity Malicious Domain/IP Reputation Alert - Domain: {{Domain}}, IP: {{NetworkIP}} ",
          "alertDynamicProperties": [
            {
              "alertProperty": "ProductName",
              "value": "ProductName"
            },
            {
              "alertProperty": "ProviderName",
              "value": "ProviderName"
            }
          ]
        },
        "alertRuleTemplateName": "7ff6f6d7-9672-4567-99fc-cb8a58c3bce7",
        "customDetails": {
          "AlertUID": "AlertUID",
          "Categories": "Categories",
          "Country": "Country",
          "FirstSeen": "FirstSeen",
          "IPversion": "IPversion",
          "ISP": "ISP",
          "LastSeen": "LastSeen",
          "LastUsersReported": "LastUsersReported",
          "RiskScore": "RiskScore",
          "ThreatActors": "ThreatActors",
          "TimeGenerated": "TimeGenerated",
          "UID": "UID"
        },
        "description": "\"This alert is raised when CYFIRMA detects a critical reputation score for an IP address linked to your infrastructure. \nThe IP has been previously associated with hacking activity and web application attacks. \nDenied outbound traffic to a foreign country from a known Microsoft data center IP suggests potential misuse or compromise of cloud infrastructure.\"\n",
        "displayName": "CYFIRMA - Attack Surface - Malicious Domain/IP Reputation High Rule",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "DNS",
            "fieldMappings": [
              {
                "columnName": "Domain",
                "identifier": "DomainName"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "TopDomain",
                "identifier": "HostName"
              },
              {
                "columnName": "Domain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "NetworkIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": false,
            "lookbackDuration": "PT5H",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cyfirma Attack Surface/Analytic Rules/ASDomainIPreputationsHighRule.yaml",
        "query": "// High Severity - Malicious Domain/IP Reputation Detected\nlet timeFrame = 5m;\nCyfirmaASDomainIPReputationAlerts_CL\n| where severity == 'Critical' and TimeGenerated between (ago(timeFrame) .. now())\n| extend\n    FirstSeen=first_seen,\n    LastSeen=last_seen,\n    RiskScore=risk_score,\n    Domain=sub_domain,\n    TopDomain=top_domain,\n    NetworkIP=ip,\n    AlertUID=alert_uid,\n    UID=uid,\n    Categories=categories,\n    IPversion=ip_version,\n    ISP=isp,\n    ThreatActors=threat_actors,\n    Country=country,\n    LastUsersReported=last_users_reported,\n    ProviderName='CYFIRMA',\n    ProductName='DeCYFIR/DeTCT'\n| project\n    TimeGenerated,\n    Domain,\n    TopDomain,\n    RiskScore,\n    FirstSeen,\n    LastSeen,\n    NetworkIP,\n    AlertUID,\n    UID,\n    Categories,\n    IPversion,\n    ISP,\n    ThreatActors,\n    Country,\n    LastUsersReported,\n    ProviderName,\n    ProductName\n",
        "queryFrequency": "PT5M",
        "queryPeriod": "PT5M",
        "severity": "High",
        "status": "Available",
        "subTechniques": [
          "T1566.002",
          "T1071.001",
          "T1090.002",
          "T1595.002",
          "T1036.005"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "DefenseEvasion",
          "Exfiltration",
          "Impact",
          "InitialAccess",
          "Reconnaissance"
        ],
        "techniques": [
          "T1036",
          "T1041",
          "T1071",
          "T1090",
          "T1499",
          "T1566",
          "T1595"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}