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"