1type: trigger
2name: sigmahq/proc_creation_win_susp_ntds
3description: |
4  Detects suspicious process patterns used in NTDS.DIT exfiltration
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.Image endsWith '\\NTDSDump.exe' || evt.Parsed.Image endsWith '\\NTDSDumpEx.exe' || evt.Parsed.CommandLine contains 'ntds.dit' && evt.Parsed.CommandLine contains 'system.hiv' || evt.Parsed.CommandLine contains 'NTDSgrab.ps1' || evt.Parsed.CommandLine contains 'ac i ntds' && evt.Parsed.CommandLine contains 'create full' || evt.Parsed.CommandLine contains '/c copy ' && evt.Parsed.CommandLine contains '\\windows\\ntds\\ntds.dit' || evt.Parsed.CommandLine contains 'activate instance ntds' && evt.Parsed.CommandLine contains 'create full' || evt.Parsed.CommandLine contains 'powershell' && evt.Parsed.CommandLine contains 'ntds.dit' || evt.Parsed.CommandLine contains 'ntds.dit' && (evt.Parsed.ParentImage contains '\\apache' || evt.Parsed.ParentImage contains '\\tomcat' || evt.Parsed.ParentImage contains '\\AppData\\' || evt.Parsed.ParentImage contains '\\Temp\\' || evt.Parsed.ParentImage contains '\\Public\\' || evt.Parsed.ParentImage contains '\\PerfLogs\\' || evt.Parsed.Image contains '\\apache' || evt.Parsed.Image contains '\\tomcat' || evt.Parsed.Image contains '\\AppData\\' || evt.Parsed.Image contains '\\Temp\\' || evt.Parsed.Image contains '\\Public\\' || evt.Parsed.Image contains '\\PerfLogs\\'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1003.003
15
16  label: "Suspicious Process Patterns NTDS.DIT Exfil"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24