Brand impersonation: FedEx

 1name: "Brand impersonation: FedEx"
 2description: |
 3    Impersonation of the shipping provider FedEx.
 4references:
 5  - "https://www.fedex.com/en-us/trust-center/report-fraud/fraudulent-email-examples.html"
 6type: "rule"
 7severity: "low"
 8source: |
 9  type.inbound
10  and (
11    sender.display_name in~ ('fedex', 'fedex shipment', 'fedex tracking updates')
12    or strings.ilevenshtein(sender.display_name, 'fedex') <= 1
13    or strings.ilike(sender.email.domain.domain, '*fedex*')
14  )
15  // sedex.com is not affiliated with FedEx, but is an apparent FP
16  and sender.email.domain.root_domain not in~ ('fedex.com', 'sedex.com', 'myworkday.com')
17  and (
18    not profile.by_sender().any_false_positives
19    and not profile.by_sender().solicited
20  )
21
22  // negate highly trusted sender domains unless they fail DMARC authentication
23  and (
24    (
25      sender.email.domain.root_domain in $high_trust_sender_root_domains
26      and not headers.auth_summary.dmarc.pass
27    )
28    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
29  )  
30attack_types:
31  - "Credential Phishing"
32tactics_and_techniques:
33  - "Impersonation: Brand"
34  - "Lookalike domain"
35  - "Social engineering"
36detection_methods:
37  - "Header analysis"
38  - "Sender analysis"
39id: "94a2b602-2bc1-5ea3-941e-752e3a2235cf"