EmailAttachmentInfo 數據表的查詢

來自惡意寄件人的檔案

尋找組織中惡意寄件人在所選時間範圍內所傳送之檔案的第一個外觀。 若要查看先前的外觀，請增加選取的時間範圍。

let MaliciousSender = "<insert the sender email address>";
EmailAttachmentInfo
| where SenderFromAddress =~ MaliciousSender
| project SHA256 = tolower(SHA256)
| join (
DeviceFileEvents
) on SHA256
| summarize FirstAppearance = min(Timestamp) by DeviceName, SHA256, FileName 
| take 100

具有附件的外部網域電子郵件

傳送至包含附件的外部網域的電子郵件。

EmailEvents
| where EmailDirection == "Outbound" and AttachmentCount > 0
| join EmailAttachmentInfo on NetworkMessageId 
| project Timestamp, Subject, SenderFromAddress, RecipientEmailAddress, NetworkMessageId, FileName, AttachmentCount 
| take 1000