AV detections related to SpringShell Vulnerability | Microsoft Sentinel Analytic Rules

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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%20Defender%20XDR/Analytic%20Rules/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

triggerThreshold: 0
triggerOperator: gt
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Defender%20XDR/Analytic%20Rules/AVSpringShell.yaml
requiredDataConnectors:
- connectorId: MicrosoftThreatProtection
  dataTypes:
  - SecurityAlert
id: 3bd33158-3f0b-47e3-a50f-7c20a1b88038
relevantTechniques:
- T1190
entityMappings:
- fieldMappings:
  - columnName: CompromisedEntity
    identifier: FullName
  - columnName: HostName
    identifier: HostName
  - columnName: HostNameDomain
    identifier: DnsDomain
  entityType: Host
- fieldMappings:
  - columnName: PublicIP
    identifier: Address
  entityType: IP
version: 1.0.3
severity: High
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)
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/'
status: Available
queryFrequency: 1d
kind: Scheduled
name: AV detections related to SpringShell Vulnerability
tags:
- CVE-2022-22965
- SpringShell
- Spring4Shell
queryPeriod: 1d
tactics:
- InitialAccess

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%20Defender%20XDR/Analytic%20Rules/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"
    }
  ]
}