LSASS Credential Dumping with Procdump

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Id	c332b840-61e4-462e-a201-0e2d69bad45d
Rulename	LSASS Credential Dumping with Procdump
Description	This query was originally published in the threat analytics report, “Exchange Server zero-days exploited in the wild”. In early March 2021, Microsoft released patches for four different zero-day vulnerabilities affecting Microsoft Exchange Server. The vulnerabilities were being used in a coordinated attack. For more information on the vulnerabilities, visit the following links: 1. CVE-2021-26855 2. CVE-2021-26857 3. CVE-2021-26858 4. CVE-2021-27065 The following query looks for evidence of Procdump being used to dump credentials from LSASS, the Local Security Authentication Server. This might indicate an attacker has compromised user accounts. More queries related to this threat can be found under the See also section of this page. Reference - https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/
Severity	High
Tactics	CredentialAccess
Techniques	T1003
Required data connectors	MicrosoftThreatProtection
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Credential Access/LSASSCredDumpProcdump.yaml
Version	1.0.0
Arm template	c332b840-61e4-462e-a201-0e2d69bad45d.json

KQL

DeviceProcessEvents 
| where (FileName has_any ("procdump.exe", "procdump64.exe") and ProcessCommandLine has "lsass") or 
// Looking for Accepteula flag or Write a dump file with all process memory
(ProcessCommandLine has "lsass.exe" and (ProcessCommandLine has "-accepteula" or ProcessCommandLine contains "-ma"))
| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")

YAML

triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Credential Access/LSASSCredDumpProcdump.yaml
version: 1.0.0
tags:
- Exchange Server
- Zero-day
- Procdump
- Credential Dumping
- LSASS
relevantTechniques:
- T1003
entityMappings:
- entityType: Host
  fieldMappings:
  - identifier: FullName
    columnName: DeviceName
  - identifier: HostName
    columnName: HostName
  - identifier: DnsDomain
    columnName: DnsDomain
requiredDataConnectors:
- dataTypes:
  - DeviceProcessEvents
  connectorId: MicrosoftThreatProtection
queryPeriod: 1h
status: Available
tactics:
- CredentialAccess
kind: Scheduled
triggerOperator: gt
query: |
  DeviceProcessEvents 
  | where (FileName has_any ("procdump.exe", "procdump64.exe") and ProcessCommandLine has "lsass") or 
  // Looking for Accepteula flag or Write a dump file with all process memory
  (ProcessCommandLine has "lsass.exe" and (ProcessCommandLine has "-accepteula" or ProcessCommandLine contains "-ma"))
  | extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)
  | extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), "")  
name: LSASS Credential Dumping with Procdump
severity: High
id: c332b840-61e4-462e-a201-0e2d69bad45d
queryFrequency: 1h
description: |
  This query was originally published in the threat analytics report, "Exchange Server zero-days exploited in the wild".
  In early March 2021, Microsoft released patches for four different zero-day vulnerabilities affecting Microsoft Exchange Server. The vulnerabilities were being used in a coordinated attack. For more information on the vulnerabilities, visit the following links:
  1. CVE-2021-26855
  2. CVE-2021-26857
  3. CVE-2021-26858
  4. CVE-2021-27065
  The following query looks for evidence of Procdump being used to dump credentials from LSASS, the Local Security Authentication Server. This might indicate an attacker has compromised user accounts.
  More queries related to this threat can be found under the See also section of this page.
  Reference - https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/

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/c332b840-61e4-462e-a201-0e2d69bad45d')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c332b840-61e4-462e-a201-0e2d69bad45d')]",
      "properties": {
        "alertRuleTemplateName": "c332b840-61e4-462e-a201-0e2d69bad45d",
        "customDetails": null,
        "description": "This query was originally published in the threat analytics report, \"Exchange Server zero-days exploited in the wild\".\nIn early March 2021, Microsoft released patches for four different zero-day vulnerabilities affecting Microsoft Exchange Server. The vulnerabilities were being used in a coordinated attack. For more information on the vulnerabilities, visit the following links:\n1. CVE-2021-26855\n2. CVE-2021-26857\n3. CVE-2021-26858\n4. CVE-2021-27065\nThe following query looks for evidence of Procdump being used to dump credentials from LSASS, the Local Security Authentication Server. This might indicate an attacker has compromised user accounts.\nMore queries related to this threat can be found under the See also section of this page.\nReference - https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server/\n",
        "displayName": "LSASS Credential Dumping with Procdump",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "identifier": "FullName"
              },
              {
                "columnName": "HostName",
                "identifier": "HostName"
              },
              {
                "columnName": "DnsDomain",
                "identifier": "DnsDomain"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Defender XDR/Analytic Rules/Credential Access/LSASSCredDumpProcdump.yaml",
        "query": "DeviceProcessEvents \n| where (FileName has_any (\"procdump.exe\", \"procdump64.exe\") and ProcessCommandLine has \"lsass\") or \n// Looking for Accepteula flag or Write a dump file with all process memory\n(ProcessCommandLine has \"lsass.exe\" and (ProcessCommandLine has \"-accepteula\" or ProcessCommandLine contains \"-ma\"))\n| extend HostName = iff(DeviceName has '.', substring(DeviceName, 0, indexof(DeviceName, '.')), DeviceName)\n| extend DnsDomain = iff(DeviceName has '.', substring(DeviceName, indexof(DeviceName, '.') + 1), \"\")\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CredentialAccess"
        ],
        "tags": [
          "Exchange Server",
          "Zero-day",
          "Procdump",
          "Credential Dumping",
          "LSASS"
        ],
        "techniques": [
          "T1003"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}