MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Impact |
Rule body
id: 43889f30-7bce-4d8a-93bb-29c9615ca8dd
name: VMware ESXi - VM stopped
description: |
'Detects when VM was stopped.'
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: SyslogAma
datatypes:
- Syslog
queryFrequency: 1h
queryPeriod: 1h
triggerOperator: gt
triggerThreshold: 0
tactics:
- Impact
relevantTechniques:
- T1529
query: |
VMwareESXi
| where SyslogMessage has ('VmPoweredOffEvent')
| extend SrcUsername = extract(@'\[info\]\s+\[(.*?)\]', 1, SyslogMessage)
| extend DstHostname = extract(@'\[\d+\]\s+\[(.*?)\s+on', 1, SyslogMessage)
| extend HostCustomEntity = DstHostname, AccountCustomEntity = SrcUsername
entityMappings:
- entityType: Host
fieldMappings:
- identifier: FullName
columnName: HostCustomEntity
- entityType: Account
fieldMappings:
- identifier: Name
columnName: AccountCustomEntity
version: 1.0.2
kind: Scheduled
Stages and Predicates
Stage 1: source
VMwareESXi
Stage 2: where
| where SyslogMessage has ('VmPoweredOffEvent')
Stage 3: extend (3 consecutive steps)
| extend SrcUsername = extract(@'\[info\]\s+\[(.*?)\]', 1, SyslogMessage)
| extend DstHostname = extract(@'\[\d+\]\s+\[(.*?)\s+on', 1, SyslogMessage)
| extend HostCustomEntity = DstHostname, AccountCustomEntity = SrcUsername
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
SyslogMessage | match |
| field:"SyslogMessage" kind:match value:"VmPoweredOffEvent" |
Output fields
These fields are emitted when the rule matches.
| Field | Source |
|---|---|
SrcUsername | extend |
DstHostname | extend |
AccountCustomEntity | extend |
HostCustomEntity | extend |