1type: trigger
2name: sigmahq/proc_creation_win_certoc_download_direct_ip
3description: |
4  Detects when a user downloads a file from an IP based URL using CertOC.exe
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\certoc.exe' || evt.Parsed.OriginalFileName == 'CertOC.exe') && evt.Parsed.CommandLine matches '://[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}' && evt.Parsed.CommandLine contains '-GetCACAPS')
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1105
15
16  label: "File Download From IP Based URL Via CertOC.EXE"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24