Cisco SE - Multiple malware on host

Back


Id	b13489d7-feb1-4ad3-9a4c-09f6d64448fd
Rulename	Cisco SE - Multiple malware on host
Description	This rule triggers when multiple malware where detected on host.
Severity	High
Tactics	InitialAccess
Techniques	T1190 T1133
Required data connectors	CiscoSecureEndpoint
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEMultipleMalwareOnHost.yaml
Version	1.0.0
Arm template	b13489d7-feb1-4ad3-9a4c-09f6d64448fd.json

KQL

let threshold = 2;
CiscoSecureEndpoint
| where isnotempty(ThreatName)
| summarize infected = makeset(ThreatName) by DstHostname, bin(TimeGenerated, 10m)
| where array_length(infected) >= threshold
| extend HostCustomEntity = DstHostname

YAML

description: |
    'This rule triggers when multiple malware where detected on host.'
triggerOperator: gt
requiredDataConnectors:
- dataTypes:
  - CiscoSecureEndpoint
  connectorId: CiscoSecureEndpoint
query: |
  let threshold = 2;
  CiscoSecureEndpoint
  | where isnotempty(ThreatName)
  | summarize infected = makeset(ThreatName) by DstHostname, bin(TimeGenerated, 10m)
  | where array_length(infected) >= threshold
  | extend HostCustomEntity = DstHostname  
name: Cisco SE - Multiple malware on host
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostCustomEntity
kind: Scheduled
severity: High
relevantTechniques:
- T1190
- T1133
tactics:
- InitialAccess
queryFrequency: 1h
version: 1.0.0
queryPeriod: 1h
triggerThreshold: 0
status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEMultipleMalwareOnHost.yaml
id: b13489d7-feb1-4ad3-9a4c-09f6d64448fd

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/b13489d7-feb1-4ad3-9a4c-09f6d64448fd')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/b13489d7-feb1-4ad3-9a4c-09f6d64448fd')]",
      "properties": {
        "alertRuleTemplateName": "b13489d7-feb1-4ad3-9a4c-09f6d64448fd",
        "customDetails": null,
        "description": "'This rule triggers when multiple malware where detected on host.'\n",
        "displayName": "Cisco SE - Multiple malware on host",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostCustomEntity",
                "identifier": "HostName"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEMultipleMalwareOnHost.yaml",
        "query": "let threshold = 2;\nCiscoSecureEndpoint\n| where isnotempty(ThreatName)\n| summarize infected = makeset(ThreatName) by DstHostname, bin(TimeGenerated, 10m)\n| where array_length(infected) >= threshold\n| extend HostCustomEntity = DstHostname\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "techniques": [
          "T1133",
          "T1190"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}