cscli scenarios install sigmahq/proc_creation_win_citrix_trolleyexpress_procdump1type: trigger2name: sigmahq/proc_creation_win_citrix_trolleyexpress_procdump3description: |4 Detects a possible process memory dump that uses the white-listed Citrix TrolleyExpress.exe filename as a way to dump the lsass process memory5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.CommandLine contains '\\TrolleyExpress 7' || evt.Parsed.CommandLine contains '\\TrolleyExpress 8' || evt.Parsed.CommandLine contains '\\TrolleyExpress 9' || evt.Parsed.CommandLine contains '\\TrolleyExpress.exe 7' || evt.Parsed.CommandLine contains '\\TrolleyExpress.exe 8' || evt.Parsed.CommandLine contains '\\TrolleyExpress.exe 9' || evt.Parsed.CommandLine contains '\\TrolleyExpress.exe -ma ' || evt.Parsed.Image endsWith '\\TrolleyExpress.exe' && not (evt.Parsed.OriginalFileName contains 'CtxInstall' || evt.Parsed.OriginalFileName == ''))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t1218.01115 - attack.t1003.0011617 label: "Process Access via TrolleyExpress Exclusion"18 behavior : "windows:audit"19 remediation: false2021scope:22 type: ParentProcessId23 expression: evt.Parsed.ParentProcessId2425