Brand impersonation: GoDaddy

 1name: "Brand impersonation: GoDaddy"
 2description: "Detects messages where the sender is impersonating GoDaddy through display name manipulation or lookalike domains, while not being legitimately authenticated from GoDaddy's infrastructure."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and (
 8    strings.icontains(sender.display_name, 'godaddy')
 9    or strings.ilevenshtein(sender.display_name, 'godaddy') <= 1
10    or strings.icontains(sender.email.domain.domain, 'godaddy')
11  )
12  and not (
13    sender.email.domain.root_domain in (
14      "godaddy.com",
15      "registry.godaddy",
16      "sucuri.net"
17    )
18    and headers.auth_summary.dmarc.pass
19  )
20  and not profile.by_sender().solicited
21  // negate highly trusted sender domains unless they fail DMARC authentication
22  and (
23    (
24      sender.email.domain.root_domain in $high_trust_sender_root_domains
25      and not headers.auth_summary.dmarc.pass
26    )
27    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
28  )  
29
30attack_types:
31  - "Credential Phishing"
32tactics_and_techniques:
33  - "Impersonation: Brand"
34  - "Social engineering"
35detection_methods:
36  - "Header analysis"
37  - "Sender analysis"
38id: "4130d555-40fc-5b12-bbf0-60cf5e93c15f"