Brand impersonation: UPS

 1name: "Brand impersonation: UPS"
 2description: |
 3    Detects messages impersonating UPS (United Parcel Service) through display name, email address patterns, subject content, or HTML styling that mimics UPS branding, while excluding legitimate UPS domains.
 4references:
 5  - "https://www.bleepingcomputer.com/news/security/phishing-campaign-uses-upscom-xss-vuln-to-distribute-malware/"
 6  - "https://twitter.com/DanielGallagher/status/1429794038463479813"
 7  - "https://www.ups.com/us/en/help-center/legal-terms-conditions/fight-fraud/recognize.page"
 8type: "rule"
 9severity: "low"
10source: |
11  type.inbound
12  and sender.email.domain.root_domain not in ("ups.com", "upsemail.com")
13  and (
14    sender.display_name in~ ("UPS My Choice", "UPS Services", "Ups.com")
15    or regex.icontains(sender.display_name, 'ups-\w+')
16    // sender display name with weird delivery id
17    or regex.icontains(sender.display_name, '\bups\b.{0,40}id[\s-]?[a-z0-9]{6,}')
18    or strings.ilike(sender.email.local_part, "*united*parcel*service*")
19    or strings.ilike(sender.email.domain.domain, '*united*parcel*service*')
20    or strings.icontains(subject.subject, 'UPS delivery')
21    or sender.email.local_part =~ "ups"
22    or regex.icontains(sender.display_name,
23                       "U[^a-zA-Z]P[^a-zA-Z]S(?:[^a-zA-Z]|$)"
24    )
25    or strings.icontains(body.html.raw, 'background-color:#351d20')
26    or strings.icontains(body.html.raw, 'background-color: #351d20')
27    or (
28      regex.imatch(sender.display_name, 'ups')
29      and not sender.email.domain.root_domain == "appleid.com"
30    )
31  )
32  and (
33    // Observed in the "footer" of impersation messages
34    // added this due to the UPS image not loading on some emails
35    strings.icontains(body.current_thread.text, "United Parcel Service of")
36    or regex.icontains(body.current_thread.text,
37                       "(©|®).{0,15}(?:U.?P.?S.?|United Parcel Service)"
38    )
39    or any(ml.logo_detect(file.message_screenshot()).brands, .name is not null)
40  )
41  and sender.email.email not in $recipient_emails
42  
43  // negate highly trusted sender domains unless they fail DMARC authentication
44  and (
45    (
46      sender.email.domain.root_domain in $high_trust_sender_root_domains
47      and not headers.auth_summary.dmarc.pass
48    )
49    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
50  )  
51attack_types:
52  - "Credential Phishing"
53tactics_and_techniques:
54  - "Impersonation: Brand"
55  - "Lookalike domain"
56  - "Social engineering"
57detection_methods:
58  - "Computer Vision"
59  - "Sender analysis"
60id: "73b68869-5720-5dc3-b4bc-15730de972d8"