cscli scenarios install sigmahq/proc_creation_win_pua_defendercheck1type: trigger2name: sigmahq/proc_creation_win_pua_defendercheck3description: |4 Detects the use of DefenderCheck, a tool to evaluate the signatures used in Microsoft Defender. It can be used to figure out the strings / byte chains used in Microsoft Defender to detect a tool and thus used for AV evasion.5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.Image endsWith '\\DefenderCheck.exe' || evt.Parsed.Description == 'DefenderCheck')7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1027.0051516 label: "PUA - DefenderCheck Execution"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324