↳ GitHub sourceAnalytics ruleMedium
Office365 Sharepoint File transfer above threshold
Description
'Identifies Office365 Sharepoint File Transfers above certain threshold in a 15min time period.
Please note that entity mapping for arrays is not supported, so when there is a single value in an array, we will pull that value from the array as a single string to populate the entity to support entity mapping features within Sentinel. Additionally, if the array is multivalued, we will input a string to indicate this with a unique hash so that matching will not occur.'
- Rule type
- Scheduled
- Version
- 1.0.6
- Query frequency
- 15m
- Query period
- 15m
- 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 threshold = 5000;
OfficeActivity
| where EventSource == "SharePoint" and OfficeWorkload has_any("SharePoint", "OneDrive") and Operation has_any ("FileDownloaded", "FileSyncDownloadedFull", "FileSyncUploadedFull", "FileUploaded")
| summarize count_distinct_OfficeObjectId=dcount(OfficeObjectId), fileslist=make_set(OfficeObjectId, 10000) by UserId,ClientIP,bin(TimeGenerated, 15m)
| where count_distinct_OfficeObjectId >= threshold
| extend FileSample = iff(array_length(fileslist) == 1, tostring(fileslist[0]), strcat("SeeFilesListField","_", tostring(hash(tostring(fileslist)))))
| extend AccountName = tostring(split(UserId, "@")[0]), AccountUPNSuffix = tostring(split(UserId, "@")[1])
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
8b4f03e7-3460-4401-824d-e65a8dd464f0
GSTEP / CATALOG TRACKING
Added to catalog : 16 Sept 2026 · 05:49 UTC
Last change observed : 16 Sept 2026 · 05:49 UTC