1type: trigger
2name: sigmahq/proc_creation_win_mshta_http
3description: |
4  Detects execution of the "mshta" utility with an argument containing the "http" keyword, which could indicate that an attacker is executing a remotely hosted malicious hta file
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\mshta.exe' || evt.Parsed.OriginalFileName == 'MSHTA.EXE') && (evt.Parsed.CommandLine contains 'http://' || evt.Parsed.CommandLine contains 'https://' || evt.Parsed.CommandLine contains 'ftp://'))
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14   - attack.t1218.005
15
16  label: "Remotely Hosted HTA File Executed Via Mshta.EXE"
17  behavior : "windows:audit"
18  remediation: false
19
20scope:
21  type: ParentProcessId
22  expression: evt.Parsed.ParentProcessId
23
24