Brand impersonation: SiriusXM

 1name: "Brand impersonation: SiriusXM"
 2description: "Impersonation of the broadcasting corporation SiriusXM."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and (
 8    regex.icontains(sender.display_name, 'sirius[._-]?xm')
 9    or strings.ilevenshtein(sender.display_name, 'siriusxm') <= 1
10    or strings.ilike(sender.email.domain.domain, '*siriusxm*')
11    or (
12      strings.istarts_with(body.current_thread.text, 'sirius xm')
13      and regex.contains(body.current_thread.text,
14                         '[\x{1F600}-\x{1F64F}]|[\x{1F300}-\x{1F5FF}]|[\x{1F680}-\x{1F6FF}]|[\x{1F1E0}-\x{1F1FF}]|[\x{2600}-\x{26FF}]|[\x{2700}-\x{27BF}]'
15      )
16    )
17  )
18  and (
19    sender.email.domain.root_domain not in (
20      'siriusxm.com',
21      'siriusxmmedia.com',
22      'siriusxm.ca',
23      'engagement360.net', // SiriusXM survey vendor
24      'sciquest.com' // SiriusXM Procurement
25    )
26    or (
27      sender.email.domain.root_domain in (
28        'siriusxm.com',
29        'siriusxmmedia.com',
30        'siriusxm.ca',
31        'engagement360.net', // SiriusXM survey vendor
32        'sciquest.com' // SiriusXM Procurement
33      )
34      and not headers.auth_summary.dmarc.pass
35    )
36  )
37  and not profile.by_sender().solicited
38  // negate highly trusted sender domains unless they fail DMARC authentication
39  and not (
40    sender.email.domain.root_domain in $high_trust_sender_root_domains
41    and coalesce(headers.auth_summary.dmarc.pass, false)
42  )  
43attack_types:
44  - "Callback Phishing"
45  - "Credential Phishing"
46  - "Spam"
47tactics_and_techniques:
48  - "Free email provider"
49  - "Impersonation: Brand"
50  - "Social engineering"
51detection_methods:
52  - "Content analysis"
53  - "Header analysis"
54  - "Sender analysis"
55id: "70eb3792-cd7a-5369-b1c3-65a3b772de00"