1type: trigger
2name: sigmahq/proc_creation_win_cmd_curl_download_exec_combo
3description: |
4  Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.CommandLine contains ' -c ' || evt.Parsed.CommandLine contains ' /c ' || evt.Parsed.CommandLine contains ' –c ' || evt.Parsed.CommandLine contains ' —c ' || evt.Parsed.CommandLine contains ' ―c ') && evt.Parsed.CommandLine contains 'curl ' && evt.Parsed.CommandLine contains 'http' && evt.Parsed.CommandLine contains '-o' && evt.Parsed.CommandLine contains '&')
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1218
15   - attack.t1105
16
17  label: "Curl Download And Execute Combination"
18  behavior : "windows:audit"
19  remediation: false
20
21scope:
22  type: ParentProcessId
23  expression: evt.Parsed.ParentProcessId
24
25