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 regex.icontains(sender.display_name, '^Fed-?ex')
14    or strings.ilike(sender.email.domain.domain, '*fedex*')
15  )
16  
17  and sender.email.domain.root_domain not in~ (
18    'fedex.com',
19    'cj.com', // CJ is a global affiliate marketing network
20    'sedex.com', // sedex.com is not affiliated with FedEx, but is an apparent FP
21    'myworkday.com',
22    'billtrust.com',
23    'flying-cargo.rs', // Serbian arm of Fedex (https://www.fedex.com/en-rs/customer-support.html)
24    'confirmit.com', // survey/market research company
25    'centercode.com' // survey company
26  )
27  and (
28    not profile.by_sender().any_messages_benign
29    and not profile.by_sender().solicited
30  )
31  
32  // negate highly trusted sender domains unless they fail DMARC authentication
33  and (
34    (
35      sender.email.domain.root_domain in $high_trust_sender_root_domains
36      and not headers.auth_summary.dmarc.pass
37    )
38    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
39  )  
40attack_types:
41  - "Credential Phishing"
42tactics_and_techniques:
43  - "Impersonation: Brand"
44  - "Lookalike domain"
45  - "Social engineering"
46detection_methods:
47  - "Header analysis"
48  - "Sender analysis"
49id: "94a2b602-2bc1-5ea3-941e-752e3a2235cf"