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ProofpointPOD - Binary file in attachment

Description

'Detects when email received with binary file as attachment.'
Rule type
Scheduled
Version
1.0.3
Declared status
Available
Query frequency
10m
Query period
10m
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 = 10m;
let binaryTypes = dynamic(['zip', 'octet-stream', 'java-archive', 'rar', 'tar', 'x-7z-compressed', 'x-msdownload', 'portable-executable']);
ProofpointPOD
| where TimeGenerated > ago(lbtime)
| where EventType == 'message'
| where NetworkDirection == 'inbound'
| where FilterDisposition !in ('reject', 'discard')
| extend attachedMimeType = tostring(todynamic(MsgParts)[0]['detectedMime'])
| where attachedMimeType has_any (binaryTypes)
| project SrcUserUpn, AccountCustomEntity = tostring(parse_json(DstUserUpn)[0]), attachedMimeType, MsgHeaderSubject
| extend Name = tostring(split(AccountCustomEntity, "@")[0]), UPNSuffix = tostring(split(AccountCustomEntity, "@")[1])

Declared entities

Account

Related content

Links established from declared identifiers and solution manifests.

Source provenance

GitHub

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

Source identifier
eb68b129-5f17-4f56-bf6d-dde48d5e615a
Additional source files 3Solutions/Proofpoint On demand(POD) Email Security/Analytic Rules/ProofpointPODBinaryInAttachment.yamlsource ↗Detections/ProofpointPOD/ProofpointPODBinaryInAttachment.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

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