KQL Search

//This query will hunt for real time risk events flagged as medium or high that aren't confirmed safe by Microsoft and then enrich that data with information from the IdentityInfo table

//Data connector required for this query - Azure Active Directory - AAD User Risk Events
//Data connector required for this query - Azure Active Directory - Signin Logs
//Data connector required for this query - Microsoft Sentinel UEBA

let id=
    IdentityInfo
    | summarize arg_max(TimeGenerated, *) by AccountUPN;
let signin=
    SigninLogs
    | where TimeGenerated > ago (14d)
    | where RiskLevelDuringSignIn in ('high', 'medium')
    | join kind=inner id on $left.UserPrincipalName == $right.AccountUPN
    | extend SigninTime = TimeGenerated
    | where RiskEventTypes_V2 != "[]";
AADUserRiskEvents
| where TimeGenerated > ago (14d)
| extend RiskTime = TimeGenerated
| where DetectionTimingType == "realtime"
| where RiskDetail !has "aiConfirmedSigninSafe"
| join kind=inner signin on CorrelationId
| extend TimeDelta = abs(SigninTime - RiskTime)
| project
    SigninTime,
    UserPrincipalName,
    RiskTime,
    TimeDelta,
    RiskEventTypes,
    RiskLevelDuringSignIn,
    City,
    Country,
    EmployeeId,
    AssignedRoles