Open redirect: magneticmarketing.com

 1name: "Open redirect: magneticmarketing.com"
 2description: |
 3    Message contains use of the magneticmarketing.com open redirect. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9          .href_url.domain.root_domain == "magneticmarketing.com"
10          and strings.istarts_with(.href_url.path, "/_tracking/email_click/broadcast/")
11          and strings.icontains(.href_url.query_params, 'url=')
12          // negate use of the redirect by magneticmarketing
13          and not regex.icontains(.href_url.query_params, 'url=[^&]*magneticmarketing\.com')
14  )
15  and not sender.email.domain.root_domain == "magneticmarketing.com"
16  
17  // negate highly trusted sender domains unless they fail DMARC authentication
18  and (
19    (
20      sender.email.domain.root_domain in $high_trust_sender_root_domains
21      and not headers.auth_summary.dmarc.pass
22    )
23    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
24  )  
25attack_types:
26  - "Credential Phishing"
27  - "Malware/Ransomware"
28tactics_and_techniques:
29  - "Open redirect"
30detection_methods:
31  - "Sender analysis"
32  - "URL analysis"
33id: "af485a39-4766-5c89-9498-00f618b90e69"