1type: trigger
2name: sigmahq/proc_creation_win_powershell_email_exfil
3description: |
4  Detects email exfiltration via powershell cmdlets
5filter: |
6  (evt.Meta.service == 'sysmon' && evt.Parsed.EventID == '1') && ((evt.Parsed.Image endsWith '\\powershell.exe' || evt.Parsed.Image endsWith '\\pwsh.exe') && evt.Parsed.CommandLine contains 'Add-PSSnapin' && evt.Parsed.CommandLine contains 'Get-Recipient' && evt.Parsed.CommandLine contains '-ExpandProperty' && evt.Parsed.CommandLine contains 'EmailAddresses' && evt.Parsed.CommandLine contains 'SmtpAddress' && evt.Parsed.CommandLine contains '-hidetableheaders')
7blackhole: 2m
8#status: test
9labels:
10  service: windows
11  confidence: 1
12  spoofable: 0
13  classification:
14
15  label: "Email Exifiltration Via Powershell"
16  behavior : "windows:audit"
17  remediation: false
18
19scope:
20  type: ParentProcessId
21  expression: evt.Parsed.ParentProcessId
22
23