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 // negate highly trusted sender domains unless they fail DMARC authentication
17 and (
18 (
19 sender.email.domain.root_domain in $high_trust_sender_root_domains
20 and not headers.auth_summary.dmarc.pass
21 )
22 or sender.email.domain.root_domain not in $high_trust_sender_root_domains
23 )
24tags:
25 - "Attack surface reduction"
26attack_types:
27 - "Credential Phishing"
28 - "Malware/Ransomware"
29tactics_and_techniques:
30 - "Open redirect"
31detection_methods:
32 - "Sender analysis"
33 - "URL analysis"
34id: "a5b3901f-e57b-5fb9-a3d7-ee2205cc0c5b"