cscli scenarios install sigmahq/proc_creation_win_susp_download_office_domain1type: trigger2name: sigmahq/proc_creation_win_susp_download_office_domain3description: |4 Detects suspicious ways to download files from Microsoft domains that are used to store attachments in Emails or OneNote documents5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\curl.exe' || evt.Parsed.Image endsWith '\\wget.exe' || evt.Parsed.CommandLine contains 'Invoke-WebRequest' || evt.Parsed.CommandLine contains 'iwr ' || evt.Parsed.CommandLine contains 'curl ' || evt.Parsed.CommandLine contains 'wget ' || evt.Parsed.CommandLine contains 'Start-BitsTransfer' || evt.Parsed.CommandLine contains '.DownloadFile(' || evt.Parsed.CommandLine contains '.DownloadString(') && (evt.Parsed.CommandLine contains 'https://attachment.outlook.live.net/owa/' || evt.Parsed.CommandLine contains 'https://onenoteonlinesync.onenote.com/onenoteonlinesync/'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t110515 - attack.t16081617 label: "Suspicious Download from Office Domain"18 behavior : "windows:audit"19 remediation: false2021scope:22 type: ParentProcessId23 expression: evt.Parsed.ParentProcessId2425