↳ Source GitHubRègle analytiqueMedium

Several deny actions registered

Description

'Identifies attack pattern when attacker tries to move, or scan, from resource to resource on the network and creates an incident when a source has more than 1 registered deny action in Azure Firewall.'
Type de règle
Scheduled
Version
1.1.3
Statut déclaré
Available
Fréquence
1h
Période analysée
1h
Déclenchement
gt 0

Couverture MITRE déclarée

Sources déclarées

Métadonnées du fichier source. Aucune dépendance déduite du KQL.

Connecteurs

Types de données

Requête KQL

Requête originale, sans modification.

let threshold = 2;
union isfuzzy=true(
AZFWApplicationRule
| where Action == "Deny"
| summarize StartTime = min(TimeGenerated), count() by SourceIp, Fqdn, Action, Protocol
| where count_ >= threshold),
(AZFWNetworkRule
| where Action == "Deny"
| extend Fqdn = DestinationIp
| summarize StartTime = min(TimeGenerated), count_ = dcount(DestinationPort), Protocols = make_set(Protocol) by SourceIp, Fqdn, Action
| where count_ >= threshold
| extend Protocol = strcat_array(Protocols, "/")),
(AZFWFlowTrace
| where Action == "Deny"
| extend Fqdn = DestinationIp
| summarize StartTime = min(TimeGenerated), count() by SourceIp, Fqdn, Action, Protocol
| where count_ >= threshold),
(AZFWIdpsSignature
| where Action == "Deny"
| extend Fqdn = DestinationIp
| summarize StartTime = min(TimeGenerated), count() by SourceIp, Fqdn, Action, Protocol
| where count_ >= threshold),
(AzureDiagnostics
| where OperationName in ("AzureFirewallApplicationRuleLog","AzureFirewallNetworkRuleLog")
| extend msg_s_replaced0 = replace(@"\s\s",@" ",msg_s)
| extend msg_s_replaced1 = replace(@"\.\s",@" ",msg_s_replaced0)
| extend msg_a = split(msg_s_replaced1," ")
| extend srcAddr_a = split(msg_a[3],":") , destAddr_a = split(msg_a[5],":")
| extend Protocol = tostring(msg_a[0]), SourceIp = tostring(srcAddr_a[0]), srcPort = tostring(srcAddr_a[1]), DestinationIp = tostring(destAddr_a[0]), destPort = tostring(destAddr_a[1]), Action = tostring(msg_a[7])
| where Action == "Deny"
| extend Fqdn = iff(DestinationIp matches regex "\\d+\\.\\d+\\.\\d+\\.\\d+","",DestinationIp)
| summarize StartTime = min(TimeGenerated), count() by SourceIp, Fqdn, Action, Protocol
| where count_ >= threshold)

Entités déclarées

IPURL

Contenus associés

Liens établis à partir des identifiants déclarés et des manifests des solutions.

Traçabilité de la source

GitHub

Les valeurs affichées proviennent des fichiers du dépôt Azure/Azure-Sentinel. Elles décrivent le modèle publié, pas la configuration de votre workspace.

Identifiant source
f8dad4e9-3f19-4d70-ab7f-8f19ccd43a3e
Autres fichiers source 3Solutions/Azure Firewall/Analytic Rules/SeveralDenyActionsRegistered.yamlsource ↗Detections/AzureFirewall/SeveralDenyActionsRegistered.yamlmigration-note ↗Solutions/Azure Firewall/Data/Solution_AzureFirewall.jsonsolution-membership ↗
GSTEP / SUIVI DU CATALOGUE

Ajouté au catalogue : 16 sept. 2026 · 05:49 UTC
Dernier changement observé : 16 sept. 2026 · 05:49 UTC

Dates de synchronisation GSTEP, distinctes des dates de publication du contenu source.