1type: trigger
2name: sigmahq/proc_creation_win_reg_disable_sec_services
3description: |
4  Detects execution of "reg.exe" to disable security services such as Windows Defender.
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && (evt.Parsed.CommandLine contains 'reg' && evt.Parsed.CommandLine contains 'add' && evt.Parsed.CommandLine contains 'd 4' && evt.Parsed.CommandLine contains 'v Start' && (evt.Parsed.CommandLine contains '\\AppIDSvc' || evt.Parsed.CommandLine contains '\\MsMpSvc' || evt.Parsed.CommandLine contains '\\NisSrv' || evt.Parsed.CommandLine contains '\\SecurityHealthService' || evt.Parsed.CommandLine contains '\\Sense' || evt.Parsed.CommandLine contains '\\UsoSvc' || evt.Parsed.CommandLine contains '\\WdBoot' || evt.Parsed.CommandLine contains '\\WdFilter' || evt.Parsed.CommandLine contains '\\WdNisDrv' || evt.Parsed.CommandLine contains '\\WdNisSvc' || evt.Parsed.CommandLine contains '\\WinDefend' || evt.Parsed.CommandLine contains '\\wscsvc' || evt.Parsed.CommandLine contains '\\wuauserv'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1562.001
15
16  label: "Security Service Disabled Via Reg.EXE"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24