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VMware ESXi - Unexpected disk image

Description

'Detects unexpected disk image for VM.'
Rule type
Scheduled
Version
1.0.2
Declared status
Available
Query frequency
1h
Query period
14d
Trigger
gt 0

Declared MITRE coverage

Declared sources

Metadata from the source file. No dependencies inferred from KQL.

Connectors

KQL query

Original query, unchanged.

let img_ =
VMwareESXi
| where SyslogMessage has ('Matched discovered VM')
| extend DstHostname = extract(@'vim.VirtualMachine\S+,(.*?)\]', 1, SyslogMessage)
| extend kImageName = extract(@'ds:///vmfs/volumes/(.*)/(.*?),', 2, SyslogMessage)
| summarize img_lst = makeset(kImageName) by DstHostname;
VMwareESXi
| where SyslogMessage has ('Matched discovered VM')
| extend DstHostname = extract(@'vim.VirtualMachine\S+,(.*?)\]', 1, SyslogMessage)
| extend ImageName = extract(@'ds:///vmfs/volumes/(.*)/(.*?),', 2, SyslogMessage)
| join (img_) on DstHostname
| where img_lst !has ImageName
| extend HostCustomEntity = DstHostname

Declared entities

Host

Related content

Links established from declared identifiers and solution manifests.

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

Source identifier
395c5560-ddc2-45b2-aafe-2e3f64528d3d
Additional source files 2Solutions/VMWareESXi/Analytic Rules/ESXiUnexpectedDiskImage.yamlsource ↗Solutions/VMWareESXi/Data/Solution_VMWareESXi.jsonsolution-membership ↗
GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.