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    or strings.ilike(sender.email.local_part, "*united*parcel*service*")
17    or strings.ilike(sender.email.domain.domain, '*united*parcel*service*')
18    or strings.icontains(subject.subject, 'UPS delivery')
19    or sender.email.local_part =~ "ups"
20    or regex.icontains(sender.display_name,
21                       "U[^a-zA-Z]P[^a-zA-Z]S(?:[^a-zA-Z]|$)"
22    )
23    or strings.icontains(body.html.raw, 'background-color:#351d20')
24    or strings.icontains(body.html.raw, 'background-color: #351d20')
25  )
26  and (
27    // Observed in the "footer" of impersation messages
28    // added this due to the UPS image not loading on some emails
29    strings.icontains(body.current_thread.text, "United Parcel Service of")
30    or regex.icontains(body.current_thread.text,
31                       "(©|®).{0,15}(?:U.?P.?S.?|United Parcel Service)"
32    )
33    or any(ml.logo_detect(file.message_screenshot()).brands, .name is not null)
34  )
35  and sender.email.email not in $recipient_emails
36  
37  // negate highly trusted sender domains unless they fail DMARC authentication
38  and (
39    (
40      sender.email.domain.root_domain in $high_trust_sender_root_domains
41      and not headers.auth_summary.dmarc.pass
42    )
43    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
44  )  
45
46attack_types:
47  - "Credential Phishing"
48tactics_and_techniques:
49  - "Impersonation: Brand"
50  - "Lookalike domain"
51  - "Social engineering"
52detection_methods:
53  - "Computer Vision"
54  - "Sender analysis"
55id: "73b68869-5720-5dc3-b4bc-15730de972d8"