Brand impersonation: Wix

 1name: "Brand impersonation: Wix"
 2description: "Detects messages impersonating Wix by using similar display names or domain names, while not originating from legitimate WIX domains or failing DMARC authentication from trusted senders."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and (
 8    (
 9      regex.icontains(sender.display_name, '^WIX\b')
10      or strings.ilike(sender.email.domain.domain, 'WIX')
11    )
12    or (
13      strings.icontains(sender.display_name, 'wix')
14      and regex.icontains(body.current_thread.text,
15                          "Domain Expir(?:ation|y) Not(?:ice|ification)"
16      )
17      and strings.icontains(body.current_thread.text, "will be deactivated")
18    )
19    // Wix address from footer
20    or 2 of (
21      strings.icontains(body.current_thread.text, 'Wix.com'),
22      strings.icontains(body.current_thread.text, '100 Gansevoort St'),
23      strings.icontains(body.current_thread.text, 'New York, NY 10014')
24    )
25  )
26  and not (
27    (
28      sender.email.domain.root_domain in~ (
29        "wix.com",
30        "wixforms.com",
31        "wixemails.com",
32        "wixanswers.com",
33        "wix-groups.com",
34        "ascendbywix.com"
35      )
36      and headers.auth_summary.dmarc.pass
37    )
38  )
39  // negation for messages traversing wix.com 
40  and not (
41    any(headers.domains, .root_domain in ("wix.com", "ascendbywix.com"))
42    and headers.auth_summary.spf.pass
43    and headers.auth_summary.dmarc.pass
44  )
45  and not profile.by_sender().solicited
46  // negate highly trusted sender domains unless they fail DMARC authentication
47  and (
48    (
49      sender.email.domain.root_domain in $high_trust_sender_root_domains
50      and not headers.auth_summary.dmarc.pass
51    )
52    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
53  )  
54
55attack_types:
56  - "Credential Phishing"
57tactics_and_techniques:
58  - "Impersonation: Brand"
59  - "Lookalike domain"
60  - "Social engineering"
61detection_methods:
62  - "Header analysis"
63  - "Sender analysis"
64id: "45e7b99f-94fc-5ae4-b5c9-ebfb59b04fe9"