T1114 o365_suspect_email_actions: add Graph message trace fixture - #1224
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Splunk Add-on for Microsoft Office 365 6.x collects message trace via Microsoft Graph and emits sourcetype o365:graph:messagetrace with camelCase fields. Add the same four suspect messages in that shape so the ESCU message trace detections can be tested against both sourcetypes. Also correct the manifest sourcetype for the legacy message trace file. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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Adds
o365_graph_messagetrace_suspect_events.log: the same four suspect messages alreadyin
o365_messagetrace_suspect_events.log, in the shape emitted by Splunk Add-on forMicrosoft Office 365 6.x (
o365:graph:messagetrace): camelCase fields, lowercasestatus,receivedDateTime,idfromMessageTraceId. Message IDs are unchanged so the file stilljoins with
o365_exchange_suspect_events.log.Also corrects the manifest entry for the legacy file, which was labelled
o365:management:activity; it iso365:reporting:messagetrace.Companion to splunk/security_content#4285 and the PR that switches the four O365 message
trace detections to CIM fields.
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