let threshold = 100;
VMwareESXi
| where SyslogMessage has ('Patch store disk')
| extend sp = toreal(extract(@'free space is:\s(\d+)', 1, SyslogMessage)) / 1000000000
| where sp < threshold
| extend h = 'Hypervisor'
| extend HostCustomEntity = h
queryPeriod: 1h
id: 48d992ba-d404-4159-a8c6-46f51d1325c7
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/VMWareESXi/Analytic Rules/ESXiLowPatchDiskSpace.yaml
triggerOperator: gt
triggerThreshold: 0
entityMappings:
- fieldMappings:
- identifier: FullName
columnName: HostCustomEntity
entityType: Host
status: Available
kind: Scheduled
name: VMware ESXi - Low patch disk space
relevantTechniques:
- T1529
description: |
'This rule is triggered when low patch disk store space is detected.'
query: |
let threshold = 100;
VMwareESXi
| where SyslogMessage has ('Patch store disk')
| extend sp = toreal(extract(@'free space is:\s(\d+)', 1, SyslogMessage)) / 1000000000
| where sp < threshold
| extend h = 'Hypervisor'
| extend HostCustomEntity = h
version: 1.0.2
tactics:
- Impact
requiredDataConnectors:
- datatypes:
- Syslog
connectorId: SyslogAma
severity: Medium
queryFrequency: 1h
