Open redirect: Ticketmaster
Message contains use of the Ticketmaster open redirect, but the sender is not Ticketmaster. This has been exploited in the wild.
Sublime rule (View on GitHub)
1name: "Open redirect: Ticketmaster"
2description: |
3 Message contains use of the Ticketmaster open redirect, but the sender is not Ticketmaster. This has been exploited in the wild.
4references:
5 - "https://www.reddit.com/r/cybersecurity/comments/127q4ny/ticketmaster_systems_exploited_for_phishing/"
6type: "rule"
7severity: "low"
8source: |
9 type.inbound
10 and any(body.links,
11 .href_url.domain.domain == 'links.engage.ticketmaster.com' and .href_url.path =~ '/ctt'
12 )
13 and sender.email.domain.root_domain != 'ticketmaster.com'
14 and headers.return_path.domain.root_domain != "ticketmaster.com"
15
16 and (
17 not profile.by_sender().solicited
18 or (
19 profile.by_sender().any_messages_malicious_or_spam
20 and not profile.by_sender().any_false_positives
21 )
22 )
23
24 // negate highly trusted sender domains unless they fail DMARC authentication
25 and (
26 (
27 sender.email.domain.root_domain in $high_trust_sender_root_domains
28 and (
29 any(distinct(headers.hops, .authentication_results.dmarc is not null),
30 strings.ilike(.authentication_results.dmarc, "*fail")
31 )
32 )
33 )
34 or sender.email.domain.root_domain not in $high_trust_sender_root_domains
35 )
36tags:
37 - "Attack surface reduction"
38attack_types:
39 - "Credential Phishing"
40 - "Malware/Ransomware"
41tactics_and_techniques:
42 - "Open redirect"
43detection_methods:
44 - "Sender analysis"
45 - "URL analysis"
46id: "a5b3901f-e57b-5fb9-a3d7-ee2205cc0c5b"