Microsoft Sentinel Analytic Rules
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Cisco SE - Connection to known C2 server

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Id0f788a93-dc88-4f80-89ef-bef7cd0fef05
RulenameCisco SE - Connection to known C2 server
DescriptionThis rule is triggered when connection to known C2 is detected from host.
SeverityHigh
TacticsCommandAndControl
TechniquesT1071
Required data connectorsCiscoSecureEndpoint
KindScheduled
Query frequency15m
Query period15m
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEC2Connection.yaml
Version1.0.0
Arm template0f788a93-dc88-4f80-89ef-bef7cd0fef05.json
Deploy To Azure
CiscoSecureEndpoint
| where EventMessage has 'Suspected botnet connection'
| extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName
severity: High
relevantTechniques:
- T1071
queryFrequency: 15m
kind: Scheduled
version: 1.0.0
name: Cisco SE - Connection to known C2 server
triggerOperator: gt
description: |
    'This rule is triggered when connection to known C2 is detected from host.'
queryPeriod: 15m
query: |
  CiscoSecureEndpoint
  | where EventMessage has 'Suspected botnet connection'
  | extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName  
entityMappings:
- entityType: Host
  fieldMappings:
  - columnName: HostCustomEntity
    identifier: HostName
- entityType: Malware
  fieldMappings:
  - columnName: MalwareCustomEntity
    identifier: Name
tactics:
- CommandAndControl
status: Available
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEC2Connection.yaml
id: 0f788a93-dc88-4f80-89ef-bef7cd0fef05
requiredDataConnectors:
- dataTypes:
  - CiscoSecureEndpoint
  connectorId: CiscoSecureEndpoint
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/0f788a93-dc88-4f80-89ef-bef7cd0fef05')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/0f788a93-dc88-4f80-89ef-bef7cd0fef05')]",
      "properties": {
        "alertRuleTemplateName": "0f788a93-dc88-4f80-89ef-bef7cd0fef05",
        "customDetails": null,
        "description": "'This rule is triggered when connection to known C2 is detected from host.'\n",
        "displayName": "Cisco SE - Connection to known C2 server",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "HostName"
              }
            ]
          },
          {
            "entityType": "Malware",
            "fieldMappings": [
              {
                "columnName": "MalwareCustomEntity",
                "identifier": "Name"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEC2Connection.yaml",
        "query": "CiscoSecureEndpoint\n| where EventMessage has 'Suspected botnet connection'\n| extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT15M",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}