Brand impersonation: FedEx

Impersonation of the shipping provider FedEx.

Sublime rule (View on GitHub)

 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    (
26      sender.email.domain.root_domain in $high_trust_sender_root_domains
27      and (
28        any(distinct(headers.hops, .authentication_results.dmarc is not null),
29            strings.ilike(.authentication_results.dmarc, "*fail")
30        )
31      )
32    )
33    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
34  )  
35attack_types:
36  - "Credential Phishing"
37tactics_and_techniques:
38  - "Impersonation: Brand"
39  - "Lookalike domain"
40  - "Social engineering"
41detection_methods:
42  - "Header analysis"
43  - "Sender analysis"
44id: "94a2b602-2bc1-5ea3-941e-752e3a2235cf"
to-top