cscli scenarios install sigmahq/proc_creation_win_rundll32_ntlmrelay1type: trigger2name: sigmahq/proc_creation_win_rundll32_ntlmrelay3description: |4 Detects a privilege elevation attempt by coercing NTLM authentication on the Printer Spooler service5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\rundll32.exe' || evt.Parsed.OriginalFileName == 'RUNDLL32.EXE') && evt.Parsed.CommandLine contains 'C:\\windows\\system32\\davclnt.dll,DavSetCookie' && evt.Parsed.CommandLine contains 'http' && (evt.Parsed.CommandLine contains 'spoolss' || evt.Parsed.CommandLine contains 'srvsvc' || evt.Parsed.CommandLine contains '/print/pipe/'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:14 - attack.t12121516 label: "Suspicious NTLM Authentication on the Printer Spooler Service"17 behavior : "windows:audit"18 remediation: false1920scope:21 type: ParentProcessId22 expression: evt.Parsed.ParentProcessId2324