AV detections related to SpringShell Vulnerability

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Id	3bd33158-3f0b-47e3-a50f-7c20a1b88038
Rulename	AV detections related to SpringShell Vulnerability
Description	This query looks for Microsoft Defender AV detections related to the SpringShell vulnerability. 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, logged-on users, 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/2022/04/04/springshell-rce-vulnerability-guidance-for-protecting-against-and-detecting-cve-2022-22965/
Severity	High
Tactics	InitialAccess
Techniques	T1190
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1d
Query period	1d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVSpringShell.yaml
Version	1.0.3
Arm template	3bd33158-3f0b-47e3-a50f-7c20a1b88038.json

KQL

let SpringShell_threats = dynamic(["Trojan:Python/SpringShellExpl", "Exploit:Python/SpringShell", "Backdoor:PHP/Remoteshell.V", "SpringShell"]);
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~ (SpringShell_threats) or ThreatFamilyName in~ (SpringShell_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(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)

YAML

relevantTechniques:
- T1190
name: AV detections related to SpringShell Vulnerability
requiredDataConnectors:
- dataTypes:
  - SecurityAlert
  connectorId: MicrosoftThreatProtection
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: CompromisedEntity
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
  entityType: Host
- fieldMappings:
  - identifier: Address
    columnName: PublicIP
  entityType: IP
triggerThreshold: 0
id: 3bd33158-3f0b-47e3-a50f-7c20a1b88038
tactics:
- InitialAccess
version: 1.0.3
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVSpringShell.yaml
queryPeriod: 1d
kind: Scheduled
tags:
- CVE-2022-22965
- SpringShell
- Spring4Shell
queryFrequency: 1d
severity: High
status: Available
description: |
  'This query looks for Microsoft Defender AV detections related to the SpringShell vulnerability. 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, logged-on users, 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/2022/04/04/springshell-rce-vulnerability-guidance-for-protecting-against-and-detecting-cve-2022-22965/'  
query: |
  let SpringShell_threats = dynamic(["Trojan:Python/SpringShellExpl", "Exploit:Python/SpringShell", "Backdoor:PHP/Remoteshell.V", "SpringShell"]);
  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~ (SpringShell_threats) or ThreatFamilyName in~ (SpringShell_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(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)  
triggerOperator: gt

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/3bd33158-3f0b-47e3-a50f-7c20a1b88038')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3bd33158-3f0b-47e3-a50f-7c20a1b88038')]",
      "properties": {
        "alertRuleTemplateName": "3bd33158-3f0b-47e3-a50f-7c20a1b88038",
        "customDetails": null,
        "description": "'This query looks for Microsoft Defender AV detections related to the SpringShell vulnerability. In Microsoft Sentinel, the SecurityAlerts table includes only the Device Name of the affected device.\n  This query joins the DeviceInfo table to clearly connect other information such as device group, IP, logged-on users, 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/2022/04/04/springshell-rce-vulnerability-guidance-for-protecting-against-and-detecting-cve-2022-22965/'\n",
        "displayName": "AV detections related to SpringShell Vulnerability",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "CompromisedEntity",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "HostNameDomain",
                "identifier": "DnsDomain"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "PublicIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/AVSpringShell.yaml",
        "query": "let SpringShell_threats = dynamic([\"Trojan:Python/SpringShellExpl\", \"Exploit:Python/SpringShell\", \"Backdoor:PHP/Remoteshell.V\", \"SpringShell\"]);\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~ (SpringShell_threats) or ThreatFamilyName in~ (SpringShell_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(DomainIndex != -1, substring(CompromisedEntity, DomainIndex + 1), CompromisedEntity)\n",
        "queryFrequency": "P1D",
        "queryPeriod": "P1D",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "InitialAccess"
        ],
        "tags": [
          "CVE-2022-22965",
          "SpringShell",
          "Spring4Shell"
        ],
        "techniques": [
          "T1190"
        ],
        "templateVersion": "1.0.3",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}