Security Nested Recommendation System Updates Assessments
Query
let query_period = 120d;
SecurityNestedRecommendation
| where TimeGenerated > ago(query_period) and ParentRecommendationId in ("4ab6e3c5-74dd-8b35-9ab9-f61b30875b27")
| summarize hint.strategy=shuffle
StartSubAssessment = min(SubAssessmentTimeGeneration),
EndSubAssessment = arg_max(SubAssessmentTimeGeneration, *)
by AssessedResourceId, VulnerabilityId
| extend UpperCamelCase = isnotempty(AdditionalData["AssessedResourceType"])
| extend
Keys = iff(UpperCamelCase, dynamic(null), extract_all(@'(\"[^\"]+\"\:)', tostring(AdditionalData))),
Initials = iff(UpperCamelCase, dynamic(null), extract_all(@'(\".)[^\"]*\"\:', tostring(AdditionalData)))
| extend AdditionalData = iff(UpperCamelCase,
AdditionalData,
todynamic(replace_strings(
tostring(AdditionalData),
Keys,
todynamic(replace_strings(
tostring(Keys),
Initials,
todynamic(toupper(Initials))
))
))
)
| join hint.remote=local kind=leftouter (
arg("").ResourceContainers
| where type == "microsoft.resources/subscriptions"
| project RecommendationSubscriptionId = subscriptionId, RecommendationSubscriptionName = name
) on RecommendationSubscriptionId
| project
StartSubAssessment,
EndSubAssessment,
Assessment_Age = bin(EndSubAssessment - StartSubAssessment, 1d)/1d,
IsSnapshot,
ParentRecommendationId,
RecommendationState,
Cause,
RecommendationSeverity,
Category,
RecommendationName,
Description,
Impact,
RecommendationSubscriptionId = coalesce(RecommendationSubscriptionName, RecommendationSubscriptionId),
ResourceGroup,
ResourceName = tostring(coalesce(split(AssessedResourceId, "/")[-1], ResourceDetails["MachineName"], ResourceDetails["machineName"])),
AssessedResourceId,
VulnerabilityId,
OsType = tostring(AdditionalData["Data"]["OsType"]),
OsVersion = tostring(AdditionalData["Data"]["OperatingSystem"]),
WindowsUpdateKBID = tostring(coalesce(AdditionalData["Data"]["Kbid"], AdditionalData["Data"]["KBID"])),
PublishedDate = todatetime(AdditionalData["Data"]["PublishedDate"]),
Product = tostring(AdditionalData["Data"]["Product"]),
PackageRepository = tostring(AdditionalData["Data"]["PackageRepository"]),
BulletinUrl = tostring(AdditionalData["Data"]["BulletinUrl"]),
CveNumbers = split(tostring(AdditionalData["Data"]["CVENumbers"]), ";"),
RebootBehaviour = tostring(AdditionalData["Data"]["RebootBehaviour"]),
ResourceLocation = tostring(coalesce(ResourceDetails["Source"], ResourceDetails["source"]))Explanation
The query retrieves security recommendations for a specific parent recommendation ID within a specified time period. It summarizes the data by the assessed resource ID and vulnerability ID. It also performs some data manipulation and joins with another dataset. The final result includes various fields such as start and end times, assessment age, recommendation state, severity, and additional details about the assessed resource and vulnerability.
Details

Jose Sebastián Canós
Released: February 2, 2024
Tables
SecurityNestedRecommendation
Keywords
DevicesIntuneUser
Operators
whereandinsummarizebyextendiffextract_allreplace_stringstodynamicjoinonprojectbincoalescesplittodatetime