↳ GitHub sourceAnalytics ruleMedium
KnowBe4 Defend - Dangerous Attachment Detected
Description
'Defend has detected a user has a suspicious file type from a suspicious sender in their mailbox.'
- Rule type
- Scheduled
- Version
- 1.0.0
- Declared status
- Available
- Query frequency
- 30m
- Query period
- 30m
- Trigger
- gt 0
Declared MITRE coverage
Declared sources
Metadata from the source file. No dependencies inferred from KQL.
Connectors
KQL query
Original query, unchanged.
DefendAuditData
| where ThreatLevel == "suspicious" or ThreatLevel == "dangerous"
| mv-expand todynamic(Attachments)
| where Attachments.name matches regex @"(?i)^.*\.(doc|docx|docm|pdf|xls|xlsx|xlsm|html|zip)$(?-i)"
| summarize attachmentCount=count() by TimeGenerated, tostring(Attachments.name), Subject, From, Account_0_FullName = trim(@"[^@.\w]+",Recipients), timesClicked = LinksClicked, SenderIP
Declared entities
Related content
Links established from declared identifiers and solution manifests.
Source provenance
GitHubDisplayed values come from files in Azure/Azure-Sentinel. They describe the published template, not your workspace configuration.
- Commit
9800e51↗- Source identifier
b75a4a7a-dedb-47be-b7e6-344f4d50af19
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC