Open redirect: tuttocauzioni.it

 1name: "Open redirect: tuttocauzioni.it"
 2description: |
 3    Message contains use of the tuttocauzioni.it 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 == "tuttocauzioni.it"
10          and .href_url.path == '/redirect.php'
11          and strings.icontains(.href_url.query_params, 'url=')
12          and not regex.icontains(.href_url.query_params,
13                                  'url=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*tuttocauzioni\.it(?:\&|\/|$|%2f)'
14          )
15  )
16  // remove uses that originate from tuttocauzioni.it
17  and not any(headers.domains, .root_domain == "tuttocauzioni.it")
18  // negate highly trusted sender domains unless they fail DMARC authentication
19  and not (
20    sender.email.domain.root_domain in $high_trust_sender_root_domains
21    and coalesce(headers.auth_summary.dmarc.pass, false)
22  )  
23attack_types:
24  - "Credential Phishing"
25  - "Malware/Ransomware"
26tactics_and_techniques:
27  - "Open redirect"
28detection_methods:
29  - "Sender analysis"
30  - "URL analysis"
31id: "6c0b2cb9-d3cb-569e-8062-df37947352c7"