Detection rules › Kusto

License Limit Exceeded

Status
available
Severity
medium
Time window
3h
Group by
Edition, Type
Source
github.com/Azure/Azure-Sentinel

Detects when the Veeam license limit is exceeded.

Rule body kusto

id: 31ffa231-72da-49f0-88cd-de08eaf3bc52
name: License Limit Exceeded
description: Detects when the Veeam license limit is exceeded.
severity: Medium
status: Available
requiredDataConnectors:
- connectorId: Syslog
  dataTypes:
  - Syslog
- connectorId: SyslogAma
  dataTypes:
  - Syslog
queryFrequency: 3h
queryPeriod: 3h
triggerOperator: gt
triggerThreshold: 0
eventGroupingSettings:
  aggregationKind: AlertPerResult
tactics: []
relevantTechniques: []
query: "let license_editions_lookup = union isfuzzy=true (datatable(Edition:string,\
  \ EditionDescription:string)[]), (_GetWatchlist(\"license_editions_lookup\")); \n\
  let license_types_lookup = union isfuzzy=true (datatable(Type:string, TypeDescription:string)[]),\
  \ (_GetWatchlist(\"license_types_lookup\")); \nVeeam_GetSecurityEvents\n| where\
  \ instanceId == 24070\n| extend Edition = extract(\"Edition=\\\"([^\\\"]*)\\\"\"\
  , 1, SyslogMessage)\n| lookup kind=leftouter (license_editions_lookup) \n    on\
  \ $left.Edition == $right.Edition\n| extend Type = extract(\"Type=\\\"([^\\\"]*)\\\
  \"\", 1, SyslogMessage)\n| lookup kind=leftouter (license_types_lookup) \n    on\
  \ $left.Type == $right.Type\n| extend TenantID = extract(\"TenantID=\\\"([^\\\"\
  ]*)\\\"\", 1, SyslogMessage)\n| extend DaysLeft = extract(\"DaysLeft=\\\"([^\\\"\
  ]*)\\\"\", 1, SyslogMessage)\n| extend SupportLeft = extract(\"SupportLeft=\\\"\
  ([^\\\"]*)\\\"\", 1, SyslogMessage)\n| project\n    Date = format_datetime(TimeGenerated,\
  \ 'dd.MM.yyyy HH:mm'),\n    DataSource = original_host,\n    EventId = instanceId,\n\
  \    [\"License Edition\"] = EditionDescription,\n    [\"License Type\"] = TypeDescription,\n\
  \    [\"Days Left\"] = DaysLeft,\n    [\"Days of Support Left\"] = SupportLeft,\n\
  \    MessageDetails = Description,\n    Severity = SeverityDescription\n"
version: 1.0.1
kind: Scheduled
customDetails:
  Date: Date
  VbrHostName: DataSource
  EventId: EventId
  MessageDetails: MessageDetails
  Severity: Severity

Stages and Predicates

Parameters

let license_editions_lookup = union isfuzzy=true (datatable(Edition:string, EditionDescription:string)[]), (_GetWatchlist("license_editions_lookup"));
let license_types_lookup = union isfuzzy=true (datatable(Type:string, TypeDescription:string)[]), (_GetWatchlist("license_types_lookup"));

Stage 1: source

Veeam_GetSecurityEvents

Stage 2: where

| where instanceId == 24070

Stage 3: extend

| extend Edition = extract("Edition=\"([^\"]*)\"", 1, SyslogMessage)

Stage 4: kusto:lookup

| lookup kind=leftouter (license_editions_lookup) 
    on $left.Edition == $right.Edition

Stage 5: extend

| extend Type = extract("Type=\"([^\"]*)\"", 1, SyslogMessage)

Stage 6: kusto:lookup

| lookup kind=leftouter (license_types_lookup) 
    on $left.Type == $right.Type

Stage 7: extend (3 consecutive steps)

| extend TenantID = extract("TenantID=\"([^\"]*)\"", 1, SyslogMessage)
| extend DaysLeft = extract("DaysLeft=\"([^\"]*)\"", 1, SyslogMessage)
| extend SupportLeft = extract("SupportLeft=\"([^\"]*)\"", 1, SyslogMessage)

Stage 8: project

| project
    Date = format_datetime(TimeGenerated, 'dd.MM.yyyy HH:mm'),
    DataSource = original_host,
    EventId = instanceId,
    ["License Edition"] = EditionDescription,
    ["License Type"] = TypeDescription,
    ["Days Left"] = DaysLeft,
    ["Days of Support Left"] = SupportLeft,
    MessageDetails = Description,
    Severity = SeverityDescription

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
instanceIdeq
  • 24070 transforms: cased

Output fields

Fields the rule emits when it matches. Chronicle authors list these in the outcome block; they appear on the detection and $risk_score drives alerting. Sentinel / Defender XDR rules build them up through project / summarize / extend stages. Sentinel maps these into alert fields via entityMappings and customDetails; Defender XDR custom detections surface them as alert fields directly.

FieldSource
DataSourceproject
Dateproject
Days Leftproject
Days of Support Leftproject
EventIdproject
License Editionproject
License Typeproject
MessageDetailsproject
Severityproject