Microsoft Sentinel Analytic Rules
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Alsid LSASS Memory

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Id3acf5617-7c41-4085-9a79-cc3a425ba83a
RulenameAlsid LSASS Memory
DescriptionSearches for OS Credentials dumping attacks
SeverityHigh
TacticsCredentialAccess
TechniquesT1003.001
Required data connectorsAlsidForAD
KindScheduled
Query frequency2h
Query period2h
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/LSASSMemory.yaml
Version1.0.1
Arm template3acf5617-7c41-4085-9a79-cc3a425ba83a.json
Deploy To Azure
afad_parser
| where MessageType == 2 and Codename == "OS Credential Dumping: LSASS Memory"
| extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))
status: Available
id: 3acf5617-7c41-4085-9a79-cc3a425ba83a
name: Alsid LSASS Memory
requiredDataConnectors:
- connectorId: AlsidForAD
  dataTypes:
  - AlsidForADLog_CL
severity: High
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/LSASSMemory.yaml
kind: Scheduled
description: |
    'Searches for OS Credentials dumping attacks'
relevantTechniques:
- T1003.001
queryPeriod: 2h
triggerOperator: gt
queryFrequency: 2h
query: |
  afad_parser
  | where MessageType == 2 and Codename == "OS Credential Dumping: LSASS Memory"
  | extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))  
version: 1.0.1
tactics:
- CredentialAccess
entityMappings:
- fieldMappings:
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
  entityType: Host
{
  "$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/3acf5617-7c41-4085-9a79-cc3a425ba83a')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/3acf5617-7c41-4085-9a79-cc3a425ba83a')]",
      "properties": {
        "alertRuleTemplateName": "3acf5617-7c41-4085-9a79-cc3a425ba83a",
        "customDetails": null,
        "description": "'Searches for OS Credentials dumping attacks'\n",
        "displayName": "Alsid LSASS Memory",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Alsid For AD/Analytic Rules/LSASSMemory.yaml",
        "query": "afad_parser\n| where MessageType == 2 and Codename == \"OS Credential Dumping: LSASS Memory\"\n| extend HostName = tostring(split(Host, '.', 0)[0]), DnsDomain = tostring(strcat_array(array_slice(split(Host, '.'), 1, -1), '.'))\n",
        "queryFrequency": "PT2H",
        "queryPeriod": "PT2H",
        "severity": "High",
        "status": "Available",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "techniques": [
          "T1003"
        ],
        "templateVersion": "1.0.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}