Open Redirect: museepicassoparis.fr

 1name: "Open Redirect: museepicassoparis.fr"
 2description: |
 3    Message contains use of the museepicassoparis.fr 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 == "museepicassoparis.fr"
10          and strings.iends_with(.href_url.path, 'registerVisit')
11          and strings.icontains(.href_url.query_params, 'tracker=')
12          and strings.icontains(.href_url.query_params, 'organization=')
13          and strings.icontains(.href_url.query_params, 'seasonId=')
14          and strings.icontains(.href_url.query_params, 'redirectTo=')
15          and not regex.icontains(.href_url.query_params,
16                                  'redirectTo=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*museepicassoparis\.fr(?:\&|\/|$|%2f)'
17          )
18  )
19  and not sender.email.domain.root_domain == "museepicassoparis.fr"
20  // negate highly trusted sender domains unless they fail DMARC authentication
21  and (
22    (
23      sender.email.domain.root_domain in $high_trust_sender_root_domains
24      and not headers.auth_summary.dmarc.pass
25    )
26    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
27  )  
28attack_types:
29  - "Credential Phishing"
30  - "Malware/Ransomware"
31tactics_and_techniques:
32  - "Open redirect"
33detection_methods:
34  - "Sender analysis"
35  - "URL analysis"
36id: "7ac8f887-28c7-5934-9839-967d2751035d"