cscli scenarios install sigmahq/proc_creation_win_rundll32_ads_stored_dll_execution1type: trigger2name: sigmahq/proc_creation_win_rundll32_ads_stored_dll_execution3description: |4 Detects execution of rundll32 where the DLL being called is stored in an Alternate Data Stream (ADS).5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\rundll32.exe' || evt.Parsed.OriginalFileName == 'RUNDLL32.EXE') && evt.Parsed.CommandLine matches '[Rr][Uu][Nn][Dd][Ll][Ll]32(\\.[Ee][Xx][Ee])? \\S+?\\w:\\S+?:')7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1564.0041516 label: "Potential Rundll32 Execution With DLL Stored In ADS"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324