↳ GitHub sourceAnalytics ruleMedium
ProofpointPOD - Multiple archived attachments to the same recipient
Description
'Detects when multiple emails where sent to the same recipient with large archived attachments.'
- Rule type
- Scheduled
- Version
- 1.0.2
- 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
Data types
KQL query
Original query, unchanged.
let lbtime = 30m;
let msgthreshold = 3;
let compressedTypes = dynamic(['zip', 'rar', 'tar', 'x-7z-compressed']);
ProofpointPOD
| where TimeGenerated > ago(lbtime)
| where EventType == 'message'
| where NetworkDirection == 'outbound'
| extend attachedMimeType = todynamic(MsgParts)[0]['detectedMime']
| where attachedMimeType has_any (compressedTypes)
| summarize count(), make_set(attachedMimeType) by SrcUserUpn, DstUserUpn
| where count_ > msgthreshold
| extend AccountCustomEntity = SrcUserUpn
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
bda5a2bd-979b-4828-a91f-27c2a5048f7f
Additional source files 3
Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODMultipleArchivedAttachmentsToSameRecipient.yamlsource ↗Detections/ProofpointPOD/ProofpointPODMultipleArchivedAttachmentsToSameRecipient.yamlmigration-note ↗Solutions/Proofpoint On demand(POD) Email Security/Data/Solution_ProofPointPOD.jsonsolution-membership ↗GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC