Infoblox - TI - InfobloxCDC Match Found - Lookalike Domains

Status: available
Severity: medium
Time window: 14d
Group by: DestinationDnsDomain, DomainName, IndicatorId
Source: github.com/Azure/Azure-Sentinel

'InfobloxCDC Lookalike Domain match found in your Infoblox TIDE Threat Intelligence. Customize query count, scheduling, responses and more. Modify data sources, types and threat properties as desired. This rule depends on a parser based on a Kusto Function to work as expected called InfobloxCDC.'

MITRE ATT&CK coverage

Tactic	Techniques
Impact	`T1498` Network Denial of Service, `T1565` Data Manipulation

Rule body kusto

id: 568730be-b39d-45e3-a392-941e00837d52
name: Infoblox - TI - InfobloxCDC Match Found - Lookalike Domains
description: |
  'InfobloxCDC Lookalike Domain match found in your Infoblox TIDE Threat Intelligence. Customize query count, scheduling, responses and more. Modify data sources, types and threat properties as desired. This rule depends on a parser based on a Kusto Function to work as expected called [**InfobloxCDC**](https://aka.ms/sentinel-InfobloxCloudDataConnector-parser).'
severity: Medium
status: Available
requiredDataConnectors:
  - connectorId: ThreatIntelligence
    dataTypes: 
      - ThreatIntelligenceIndicator
  - connectorId: CefAma
    dataTypes:
      - CommonSecurityLog
queryFrequency: 1h
queryPeriod: 14d
triggerOperator: gt
triggerThreshold: 0
tactics:
  - Impact
relevantTechniques:
  - T1498
  - T1565
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  let TI = ThreatIntelligenceIndicator
  | where TimeGenerated >= ago(ioc_lookBack)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true and ExpirationDateTime > now()  
  | where Description == "Infoblox - HOST - Policy"
  | where Tags has_cs "Property: Policy_LookalikeDomains" 
  | where isnotempty(DomainName)
  ;
  let Data = InfobloxCDC
  | extend HitTime = TimeGenerated
  | where TimeGenerated >= ago(dt_lookBack)
  | where isnotempty(DestinationDnsDomain)
  //Remove trailing period at end of domain
  | extend DestinationDnsDomain = trim_end(@"\.$", DestinationDnsDomain)
  ;
  TI | join kind=innerunique Data on $left.DomainName == $right.DestinationDnsDomain
  | where HitTime >= TimeGenerated and HitTime < ExpirationDateTime
  | project LatestIndicatorTime, HitTime, DeviceEventClassID, ThreatLevel, ThreatLevel_Score, ThreatConfidence, DestinationDnsDomain, InfobloxB1FeedName, ThreatClass, ThreatProperty, InfobloxB1PolicyAction, DeviceAction, InfobloxB1PolicyName, SourceIP, DeviceName, SourceMACAddress, SourceUserName, InfobloxB1SrcOSVersion, InfobloxB1ConnectionType, InfobloxB1Network, AdditionalExtensionsParsedNested, 
  AdditionalInformation, Description, ThreatType, TrafficLightProtocolLevel, Type, ConfidenceScore, ExpirationDateTime, SourceSystem, Action, IndicatorId, ExternalIndicatorId, Tags
entityMappings:
  - entityType: IP
    fieldMappings:
      - identifier: Address
        columnName: SourceIP
  - entityType: Host
    fieldMappings:
      - identifier: HostName
        columnName: DeviceName
      - identifier: OSVersion
        columnName: InfobloxB1SrcOSVersion
      - identifier: FullName
        columnName: SourceUserName
  - entityType: DNS
    fieldMappings:
      - identifier: DomainName
        columnName: DestinationDnsDomain
  - entityType: Malware
    fieldMappings:
      - identifier: Name
        columnName: ThreatProperty
      - identifier: Category
        columnName: ThreatClass
customDetails:
  SourceMACAddress: SourceMACAddress
  InfobloxB1FeedName: InfobloxB1FeedName
  InfobloxB1Network: InfobloxB1Network
  InfobloxB1Action: InfobloxB1PolicyAction
  InfobloxB1PolicyName: InfobloxB1PolicyName
eventGroupingSettings:
  aggregationKind: SingleAlert
incidentConfiguration:
  createIncident: true
version: 1.0.4
kind: Scheduled

Stages and Predicates

Parameters

let dt_lookBack = 1h;
let ioc_lookBack = 14d;

Let binding: `Data`

let Data = InfobloxCDC
| extend HitTime = TimeGenerated
| where TimeGenerated >= ago(dt_lookBack)
| where isnotempty(DestinationDnsDomain)
| extend DestinationDnsDomain = trim_end(@"\.$", DestinationDnsDomain);

Derived from dt_lookBack.

The stages below define let TI (the rule's main pipeline source).

Stage 1: `source`

ThreatIntelligenceIndicator

Stage 2: `where`

| where TimeGenerated >= ago(ioc_lookBack)

Stage 3: `summarize`

| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId

Stage 4: `where`

| where Active == true and ExpirationDateTime > now()

Stage 5: `where`

| where Description == "Infoblox - HOST - Policy"

Stage 6: `where`

| where Tags has_cs "Property: Policy_LookalikeDomains"

Stage 7: `where`

| where isnotempty(DomainName)

The stages below run on TI (the outer pipeline).

Stage 8: `join`

TI
| join kind=innerunique Data on $left.DomainName == $right.DestinationDnsDomain

Stage 9: `where`

| where HitTime >= TimeGenerated and HitTime < ExpirationDateTime

Stage 10: `project`

| project LatestIndicatorTime, HitTime, DeviceEventClassID, ThreatLevel, ThreatLevel_Score, ThreatConfidence, DestinationDnsDomain, InfobloxB1FeedName, ThreatClass, ThreatProperty, InfobloxB1PolicyAction, DeviceAction, InfobloxB1PolicyName, SourceIP, DeviceName, SourceMACAddress, SourceUserName, InfobloxB1SrcOSVersion, InfobloxB1ConnectionType, InfobloxB1Network, AdditionalExtensionsParsedNested, 
AdditionalInformation, Description, ThreatType, TrafficLightProtocolLevel, Type, ConfidenceScore, ExpirationDateTime, SourceSystem, Action, IndicatorId, ExternalIndicatorId, Tags

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.

Field	Kind	Values
`Active`	eq	`true` transforms: `cased`
`Description`	eq	`Infoblox - HOST - Policy` transforms: `cased`
`DestinationDnsDomain`	is_not_null	(no value, null check)
`DomainName`	is_not_null	(no value, null check)
`HitTime`	ge	`TimeGenerated` transforms: `cased`
`HitTime`	lt	`ExpirationDateTime` transforms: `cased`
`Tags`	match	`Property: Policy_LookalikeDomains` transforms: `cased`, `term`

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.

Field	Source
`Action`	`project`
`AdditionalExtensionsParsedNested`	`project`
`AdditionalInformation`	`project`
`ConfidenceScore`	`project`
`Description`	`project`
`DestinationDnsDomain`	`project`
`DeviceAction`	`project`
`DeviceEventClassID`	`project`
`DeviceName`	`project`
`ExpirationDateTime`	`project`
`ExternalIndicatorId`	`project`
`HitTime`	`project`
`IndicatorId`	`project`
`InfobloxB1ConnectionType`	`project`
`InfobloxB1FeedName`	`project`
`InfobloxB1Network`	`project`
`InfobloxB1PolicyAction`	`project`
`InfobloxB1PolicyName`	`project`
`InfobloxB1SrcOSVersion`	`project`
`LatestIndicatorTime`	`project`
`SourceIP`	`project`
`SourceMACAddress`	`project`
`SourceSystem`	`project`
`SourceUserName`	`project`
`Tags`	`project`
`ThreatClass`	`project`
`ThreatConfidence`	`project`
`ThreatLevel`	`project`
`ThreatLevel_Score`	`project`
`ThreatProperty`	`project`
`ThreatType`	`project`
`TrafficLightProtocolLevel`	`project`
`Type`	`project`

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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)

Infoblox - TI - InfobloxCDC Match Found - Lookalike Domains

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Let binding: `Data`

Stage 1: `source`

Stage 2: `where`

Stage 3: `summarize`

Stage 4: `where`

Stage 5: `where`

Stage 6: `where`

Stage 7: `where`

Stage 8: `join`

Stage 9: `where`

Stage 10: `project`

Indicators

Output fields

Keyboard shortcuts

Search operators

Infoblox - TI - InfobloxCDC Match Found - Lookalike Domains

MITRE ATT&CK coverage

Rule body kusto

Stages and Predicates

Parameters

Let binding: Data

Stage 1: source

Stage 2: where

Stage 3: summarize

Stage 4: where

Stage 5: where

Stage 6: where

Stage 7: where

Stage 8: join

Stage 9: where

Stage 10: project

Indicators

Output fields

Let binding: `Data`

Stage 1: `source`

Stage 2: `where`

Stage 3: `summarize`

Stage 4: `where`

Stage 5: `where`

Stage 6: `where`

Stage 7: `where`

Stage 8: `join`

Stage 9: `where`

Stage 10: `project`