cscli scenarios install sigmahq/proc_creation_win_format_uncommon_filesystem_load1type: trigger2name: sigmahq/proc_creation_win_format_uncommon_filesystem_load3description: |4 Detects the execution of format.com with an uncommon filesystem selection that could indicate a defense evasion activity in which "format.com" is used to load malicious DLL files or other programs.5filter: |6 (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.Image endsWith '\\format.com' && evt.Parsed.CommandLine contains '/fs:' && not (evt.Parsed.CommandLine contains '/fs:exFAT' || evt.Parsed.CommandLine contains '/fs:FAT' || evt.Parsed.CommandLine contains '/fs:NTFS' || evt.Parsed.CommandLine contains '/fs:ReFS' || evt.Parsed.CommandLine contains '/fs:UDF'))7blackhole: 2m8#status: test9labels:10 service: windows11 confidence: 112 spoofable: 013 classification:1415 label: "Uncommon FileSystem Load Attempt By Format.com"16 behavior : "windows:audit"17 remediation: false1819scope:20 type: ParentProcessId21 expression: evt.Parsed.ParentProcessId2223