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

queryFrequency: 1d
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - SecurityAlert
tags:
- CVE-2022-22965
- SpringShell
- Spring4Shell
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"]);
  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)  
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: CompromisedEntity
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: HostNameDomain
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: PublicIP
relevantTechniques:
- T1190
name: 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
queryPeriod: 1d
triggerOperator: gt
kind: Scheduled
status: Available
tactics:
- InitialAccess
id: 3bd33158-3f0b-47e3-a50f-7c20a1b88038
version: 1.0.3
triggerThreshold: 0

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"
    }
  ]
}