Azure Machine Learning Azure-Microsoft.MachineLearningServices

1 operation, identified by operationName in the audit log.

operationName	Description
_catch_all	Catch-all for Azure-Microsoft.MachineLearningServices rules matching the resource provider but no specific operation.

_catch_all: Azure Machine Learning (catch-all)

Resource provider: Azure-Microsoft.MachineLearningServices

Description

Catch-all for Azure-Microsoft.MachineLearningServices rules matching the resource provider but no specific operation.

Fields #

Name	Description
`OperationName`	Localized display name of the ARM operation. Sentinel also exposes OperationNameValue (the uppercase ARM operation string the catalog keys on).
`OperationNameValue`	The ARM operation string (e.g. MICROSOFT.COMPUTE/VIRTUALMACHINES/WRITE). The per-event discriminator; case-insensitive.
`ResourceProvider`	The Azure resource-provider namespace (e.g. Microsoft.Compute).
`ResourceId`	Full ARM resource id the operation acted on.
`Caller`	Identity that initiated the operation (UPN, object id, or service principal).
`CallerIpAddress`	IP address of the caller.
`ActivityStatusValue`	Operation status (Started, Succeeded, Failed, Accepted).
`Level`	Severity level of the activity record (Informational, Warning, Error, Critical).
`Authorization`	RBAC authorization context: the action evaluated, scope, and role assignment.
`Properties`	Operation-specific properties bag; shape varies by operation.
`SubscriptionId`	GUID of the subscription the resource belongs to.
`TimeGenerated`	UTC timestamp when the event was recorded.

Detection Rules #

View all rules referencing this event →

Kusto #

Azure Machine Learning Write Operations source low: Shows the most prevalent users who perform write operations on Azure Machine Learning resources. List the common source IP address for each of those accounts. If an operation is not from those IP addresses, it may be worthy of investigation.

References #

Azure resource provider operations reference https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
Azure Monitor AzureActivity table schema https://learn.microsoft.com/en-us/azure/azure-monitor/reference/tables/azureactivity

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`type:`	`events` / `rules` / `providers`
`vendor:`	`sigma` / `elastic` / `splunk` / `kusto` / `chronicle` (vendor name alone also works: `sigma:`, `kql:`, `secops:`…)
`tactic:`	TA-id, slug, or name: `credential_access`, `TA0006`
`technique:`	technique or sub-technique ID: `T1003`, `T1003.001` (alias `tech:`)
`severity:`	`critical` / `high` / `medium` / `low` / `informational` (alias `sev:`)
`risk_score`	Numeric comparison on the Elastic risk score (0 to 100): `risk_score>50`, `risk_score<=20`, `risk_score=99` (alias `risk`; Elastic rules only)
`stages:`	Rules with exactly N pipeline stages
`correlation:`	`single_event` / `sequence` / `alternatives` / `alternatives_cross_log` / `all_required` / `correlated`
`with:`	Co-occurrence event-id; stacks (`with:4624 with:4769`) to require all, while a comma list in one occurrence (`with:4624,4769`) is an either-or group. Implies multi-event
`like:`	Structural neighbors of a rule slug (equivalents + subsumption stricter / broader): `like:comsvcs_lsass_memory_dump-splunk-sysmon`
`groupby:`	Entity-grouping substring match against `group_by_keys`: `groupby:user`, `groupby:host`
`uses:`	Rules whose predicate tree touches the field (any kind, any value): `uses:CommandLine`
`excludes:`	Rules with top-level `not()` clauses on the field (FP whitelists): `excludes:ParentImage`
`field:` / `value:`	Predicate search; narrows rule cards to those with a matching leaf and drives the indicator tier. Unquoted = substring, wildcards allowed (`value:mimikatz`)
`indicator:`	Shorthand for `field:F value:V`: `indicator:Image=*\powershell.exe`
`kind:`	Filter by predicate kind. Narrows rule cards to those carrying a matching predicate leaf (`vendor:elastic kind:cidr_match`) and drives the indicator tier: `contains` / `starts_with` / `ends_with` / `regex` / `cidr` / `eq` / `in` … (operator aliases `op:`/`match:`)
`has:` / `no:`	`sample`, `field`, `notes`, `refs`, `trace`, `thirdparty`, `rule`, `pattern`, `timewindow`, `threshold`, `newterms`, `sigma`/`elastic`/`splunk`/`kusto`/`chronicle`
`-op:val`	Exclude matches; works on most operators but not `type:`/`like:`/`has:`/`no:` (use `no:<flag>` to exclude a rule flag): `tactic:execution -vendor:splunk`. Standalone `-kind:`/`-field:`/`-value:` drop every rule carrying a matching predicate leaf (`type:rules -kind:is_null`)
`field:"…"` / `value:"…"`	Quoted value = anchored exact match (also allows spaces): `value:"net user"`
`a,b`	Comma = OR inside one operator (`vendor:sigma,elastic`, `severity:high,critical`); repeating a facet merges the same way. `field:`/`value:` never split (literal commas)
`vendors:` / `stage:`	Singular and plural spellings fold to the canonical operator and value: `tactics:` = `tactic:`, `type:event` = `type:events`, `correlation:sequences` = `correlation:sequence`, `has:thresholds` = `has:threshold`
`"quoted phrase"`	Exact-match a multi-word phrase (free text)

Azure Machine Learning Azure-Microsoft.MachineLearningServices

_catch_all: Azure Machine Learning (catch-all)

Description

Fields #

Detection Rules #

Kusto #

References #

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