VMware ESXi - Shared or stolen root account
Id | 9c496d6c-42a3-4896-9b6c-00254386928f |
Rulename | VMware ESXi - Shared or stolen root account |
Description | Detects when shared or stolen root account. |
Severity | High |
Tactics | InitialAccess PrivilegeEscalation |
Techniques | T1078 |
Required data connectors | SyslogAma |
Kind | Scheduled |
Query frequency | 1h |
Query period | 1h |
Trigger threshold | 1 |
Trigger operator | gt |
Source Uri | https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VMWareESXi/Analytic Rules/ESXiSharedOrStolenRootAccount.yaml |
Version | 1.0.3 |
Arm template | 9c496d6c-42a3-4896-9b6c-00254386928f.json |
VMwareESXi
| where SyslogMessage has_all ('UserLoginSessionEvent', 'root', 'logged in')
| extend SrcIpAddr = extract(@'root@(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})', 1, SyslogMessage)
| summarize count() by SrcIpAddr, bin(TimeGenerated, 15m)
| where count_ > 1
| extend IPCustomEntity = SrcIpAddr
entityMappings:
- entityType: IP
fieldMappings:
- identifier: Address
columnName: IPCustomEntity
queryFrequency: 1h
name: VMware ESXi - Shared or stolen root account
kind: Scheduled
tactics:
- InitialAccess
- PrivilegeEscalation
triggerThreshold: 1
query: |
VMwareESXi
| where SyslogMessage has_all ('UserLoginSessionEvent', 'root', 'logged in')
| extend SrcIpAddr = extract(@'root@(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})', 1, SyslogMessage)
| summarize count() by SrcIpAddr, bin(TimeGenerated, 15m)
| where count_ > 1
| extend IPCustomEntity = SrcIpAddr
relevantTechniques:
- T1078
triggerOperator: gt
queryPeriod: 1h
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VMWareESXi/Analytic Rules/ESXiSharedOrStolenRootAccount.yaml
severity: High
status: Available
id: 9c496d6c-42a3-4896-9b6c-00254386928f
requiredDataConnectors:
- connectorId: SyslogAma
datatypes:
- Syslog
version: 1.0.3
description: |
'Detects when shared or stolen root account.'
{
"$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/9c496d6c-42a3-4896-9b6c-00254386928f')]",
"kind": "Scheduled",
"name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/9c496d6c-42a3-4896-9b6c-00254386928f')]",
"properties": {
"alertRuleTemplateName": "9c496d6c-42a3-4896-9b6c-00254386928f",
"customDetails": null,
"description": "'Detects when shared or stolen root account.'\n",
"displayName": "VMware ESXi - Shared or stolen root account",
"enabled": true,
"entityMappings": [
{
"entityType": "IP",
"fieldMappings": [
{
"columnName": "IPCustomEntity",
"identifier": "Address"
}
]
}
],
"OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VMWareESXi/Analytic Rules/ESXiSharedOrStolenRootAccount.yaml",
"query": "VMwareESXi\n| where SyslogMessage has_all ('UserLoginSessionEvent', 'root', 'logged in')\n| extend SrcIpAddr = extract(@'root@(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})', 1, SyslogMessage)\n| summarize count() by SrcIpAddr, bin(TimeGenerated, 15m)\n| where count_ > 1\n| extend IPCustomEntity = SrcIpAddr\n",
"queryFrequency": "PT1H",
"queryPeriod": "PT1H",
"severity": "High",
"status": "Available",
"subTechniques": [],
"suppressionDuration": "PT1H",
"suppressionEnabled": false,
"tactics": [
"InitialAccess",
"PrivilegeEscalation"
],
"techniques": [
"T1078"
],
"templateVersion": "1.0.3",
"triggerOperator": "GreaterThan",
"triggerThreshold": 1
},
"type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
}
]
}