Brand impersonation: Fastway

 1name: "Brand impersonation: Fastway"
 2description: |
 3    Impersonation of Fastway Couriers, a delivery services company in Ireland and South Africa.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and (
 9    strings.ilike(sender.display_name, '*fastway*')
10    or strings.ilevenshtein(sender.display_name, 'fastway couriers') <= 1
11  )
12  and sender.email.domain.root_domain not in~ ('fastway.co.za', 'fastway.com.au', 'fastway.ie')
13
14  // negate highly trusted sender domains unless they fail DMARC authentication
15  and (
16    (
17      sender.email.domain.root_domain in $high_trust_sender_root_domains
18      and not headers.auth_summary.dmarc.pass
19    )
20    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
21  )
22
23  // and no false positives and not solicited
24  and (
25    not profile.by_sender().any_messages_benign
26    and not profile.by_sender().solicited
27  )
28    
29attack_types:
30  - "Credential Phishing"
31tactics_and_techniques:
32  - "Impersonation: Brand"
33  - "Lookalike domain"
34  - "Social engineering"
35detection_methods:
36  - "Sender analysis"
37id: "0170dbf2-418f-5e12-a685-7cee3de33f2d"