TI Map IP Entity to SigninLogs

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
let Signins = materialize(union isfuzzy=true
  (SigninLogs
  | where TimeGenerated >= ago(dt_lookBack)),
  (AADNonInteractiveUserSignInLogs
  | where TimeGenerated >= ago(dt_lookBack)
  | extend Status = todynamic(Status), LocationDetails = todynamic(LocationDetails)));
let SigninIPs = Signins | summarize make_list(IPAddress);
let TI = materialize(ThreatIntelligenceIndicator
  | where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
  | where TimeGenerated >= ago(ioc_lookBack)
  | extend TI_ipEntity = coalesce(NetworkIP, EmailSourceIpAddress, NetworkDestinationIP, NetworkSourceIP)
  | where TI_ipEntity in (SigninIPs)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true and ExpirationDateTime > now()
  | where Description !contains_cs "State: inactive;" and Description !contains_cs "State: falsepos;");
TI
// using innerunique to keep perf fast and result set low, we only need one match to indicate potential malicious activity that needs to be investigated
| join kind=innerunique (Signins) on $left.TI_ipEntity == $right.IPAddress
| project-rename SigninLogs_TimeGenerated = TimeGenerated
| where SigninLogs_TimeGenerated < ExpirationDateTime
| extend StatusCode = tostring(Status.errorCode), StatusDetails = tostring(Status.additionalDetails), StatusReason = tostring(Status.failureReason)
| summarize SigninLogs_TimeGenerated = arg_max(SigninLogs_TimeGenerated, *) by IndicatorId, IPAddress
| project SigninLogs_TimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, TI_ipEntity, IPAddress, UserPrincipalName, AppDisplayName, StatusCode, StatusDetails, StatusReason, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress, Type
| extend timestamp = SigninLogs_TimeGenerated, Name = tostring(split(UserPrincipalName, '@', 0)[0]), UPNSuffix = tostring(split(UserPrincipalName, '@', 1)[0])

relevantTechniques:
- T1071
entityMappings:
- fieldMappings:
  - columnName: UserPrincipalName
    identifier: FullName
  - columnName: Name
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
  entityType: Account
- fieldMappings:
  - columnName: IPAddress
    identifier: Address
  entityType: IP
- fieldMappings:
  - columnName: Url
    identifier: Url
  entityType: URL
triggerThreshold: 0
description: |
    'This query maps any IP indicators of compromise (IOCs) from threat intelligence (TI), by searching for matches in SigninLogs.'
requiredDataConnectors:
- connectorId: ThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: ThreatIntelligenceTaxii
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: AzureActiveDirectory
  dataTypes:
  - SigninLogs
- connectorId: AzureActiveDirectory
  dataTypes:
  - AADNonInteractiveUserSignInLogs
- connectorId: MicrosoftDefenderThreatIntelligence
  dataTypes:
  - ThreatIntelligenceIndicator
triggerOperator: gt
version: 1.2.8
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/IPEntity_SigninLogs.yaml
id: f2eb15bd-8a88-4b24-9281-e133edfba315
queryFrequency: 1h
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  let Signins = materialize(union isfuzzy=true
    (SigninLogs
    | where TimeGenerated >= ago(dt_lookBack)),
    (AADNonInteractiveUserSignInLogs
    | where TimeGenerated >= ago(dt_lookBack)
    | extend Status = todynamic(Status), LocationDetails = todynamic(LocationDetails)));
  let SigninIPs = Signins | summarize make_list(IPAddress);
  let TI = materialize(ThreatIntelligenceIndicator
    | where isnotempty(NetworkIP) or isnotempty(EmailSourceIpAddress) or isnotempty(NetworkDestinationIP) or isnotempty(NetworkSourceIP)
    | where TimeGenerated >= ago(ioc_lookBack)
    | extend TI_ipEntity = coalesce(NetworkIP, EmailSourceIpAddress, NetworkDestinationIP, NetworkSourceIP)
    | where TI_ipEntity in (SigninIPs)
    | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
    | where Active == true and ExpirationDateTime > now()
    | where Description !contains_cs "State: inactive;" and Description !contains_cs "State: falsepos;");
  TI
  // using innerunique to keep perf fast and result set low, we only need one match to indicate potential malicious activity that needs to be investigated
  | join kind=innerunique (Signins) on $left.TI_ipEntity == $right.IPAddress
  | project-rename SigninLogs_TimeGenerated = TimeGenerated
  | where SigninLogs_TimeGenerated < ExpirationDateTime
  | extend StatusCode = tostring(Status.errorCode), StatusDetails = tostring(Status.additionalDetails), StatusReason = tostring(Status.failureReason)
  | summarize SigninLogs_TimeGenerated = arg_max(SigninLogs_TimeGenerated, *) by IndicatorId, IPAddress
  | project SigninLogs_TimeGenerated, Description, ActivityGroupNames, IndicatorId, ThreatType, Url, ExpirationDateTime, ConfidenceScore, TI_ipEntity, IPAddress, UserPrincipalName, AppDisplayName, StatusCode, StatusDetails, StatusReason, NetworkIP, NetworkDestinationIP, NetworkSourceIP, EmailSourceIpAddress, Type
  | extend timestamp = SigninLogs_TimeGenerated, Name = tostring(split(UserPrincipalName, '@', 0)[0]), UPNSuffix = tostring(split(UserPrincipalName, '@', 1)[0])  
severity: Medium
queryPeriod: 14d
name: TI Map IP Entity to SigninLogs
tactics:
- CommandAndControl
kind: Scheduled