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GTI - Initial Access Broker Alert Detected

Description

Triggers an incident when a GTI Relevance System Alert of type initial_access_broker is ingested. Initial Access Broker alerts indicate that a threat actor is advertising or has sold access (credentials, VPN, RDP, admin panels, etc.) to an organisation that matches your profile. These are high-urgency signals that may indicate imminent compromise or an ongoing breach. Each unique Alert ID is grouped into a single incident.

Rule type: Scheduled
Version: 1.0.0
Declared status: Available
Query frequency: 5m
Query period: 5m
Trigger: gt 0

Declared MITRE coverage

Declared sources

Metadata from the source file. No dependencies inferred from KQL.

Connectors

GoogleThreatIntelligenceRelevanceSystemAlertsAPI

Data types

RelevanceSystemAlerts_CL

KQL query

Original query, unchanged.

GTIRelevanceSystemAlerts
| where DetailType == "initial_access_broker"
| project
    TimeGenerated,
    AlertId,
    AlertName                       = DisplayName,
    AlertState                      = State,
    BrokerSeverity                  = InitialAccessBrokerSeverity,
    DiscoveryDocuments              = InitialAccessBrokerDiscoveryDocumentIds,
    PriorityLevel,
    PriorityReasoning,
    SeverityLevel,
    SeverityConfidence,
    SeverityReasoning,
    RelevanceLevel,
    RelevanceConfidence,
    RelevanceReasoning,
    FindingCount,
    AiSummary,
    CommonThemes                    = RelevanceEvidenceCommonThemes,
    DistinctThemes                  = RelevanceEvidenceDistinctThemes,
    AuditCreateTime,
    AuditUpdateTime

Source provenance

GitHub

Displayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.

File: Solutions/Google Threat Intelligence/Analytic Rules/RelevanceSystemAlerts/GTI_InitialAccessBrokerAlerts.yaml ↗
Commit: 9800e51 ↗
Source identifier: c3d4e5f6-a7b8-9012-cdef-123456789013

Additional source files 2

Solutions/Google Threat Intelligence/Analytic Rules/RelevanceSystemAlerts/GTI_InitialAccessBrokerAlerts.yamlsource ↗Solutions/Google Threat Intelligence/Data/Solution_GoogleThreatIntelligence.jsonsolution-membership ↗

GSTEP / CATALOG TRACKING

Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC

GSTEP sync dates, separate from the source content’s publication dates.