Microsoft Sentinel Analytic Rules
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Cisco SE - Possible webshell

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Idd2c97cc9-1ccc-494d-bad4-564700451a2b
RulenameCisco SE - Possible webshell
DescriptionDetects possible webshell on host.
SeverityHigh
TacticsCommandAndControl
TechniquesT1102
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/CiscoSEWebshell.yaml
Version1.0.0
Arm templated2c97cc9-1ccc-494d-bad4-564700451a2b.json
Deploy To Azure
CiscoSecureEndpoint
| where EventMessage has 'Possible webshell'
| extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName
triggerThreshold: 0
severity: High
id: d2c97cc9-1ccc-494d-bad4-564700451a2b
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: HostName
    columnName: HostCustomEntity
- entityType: Malware
  fieldMappings:
  - identifier: Name
    columnName: MalwareCustomEntity
status: Available
requiredDataConnectors:
- connectorId: CiscoSecureEndpoint
  dataTypes:
  - CiscoSecureEndpoint
version: 1.0.0
queryFrequency: 15m
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Cisco Secure Endpoint/Analytic Rules/CiscoSEWebshell.yaml
description: |
    'Detects possible webshell on host.'
tactics:
- CommandAndControl
triggerOperator: gt
queryPeriod: 15m
name: Cisco SE - Possible webshell
relevantTechniques:
- T1102
kind: Scheduled
query: |
  CiscoSecureEndpoint
  | where EventMessage has 'Possible webshell'
  | extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName  
{
  "$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/d2c97cc9-1ccc-494d-bad4-564700451a2b')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d2c97cc9-1ccc-494d-bad4-564700451a2b')]",
      "properties": {
        "alertRuleTemplateName": "d2c97cc9-1ccc-494d-bad4-564700451a2b",
        "customDetails": null,
        "description": "'Detects possible webshell on host.'\n",
        "displayName": "Cisco SE - Possible webshell",
        "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/CiscoSEWebshell.yaml",
        "query": "CiscoSecureEndpoint\n| where EventMessage has 'Possible webshell'\n| extend HostCustomEntity = DstHostname, MalwareCustomEntity = ThreatName\n",
        "queryFrequency": "PT15M",
        "queryPeriod": "PT15M",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1102"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}