Open redirect: agena-smile.com

name: "Open redirect: agena-smile.com"
description: |
  Message contains use of the agena-smile.com redirect with wptouch_switch parameter. This has been exploited in the wild for phishing.
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(body.links,
          .href_url.domain.root_domain == "agena-smile.com"
          and strings.icontains(.href_url.query_params, 'wptouch_switch=')
          and strings.icontains(.href_url.query_params, 'redirect=')
          and not regex.icontains(.href_url.query_params,
                                  'redirect=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*agena-smile\.com(?:\&|\/|$|%2f)'
          )
  )
  and not sender.email.domain.root_domain == "agena-smile.com"
  
  // negate highly trusted sender domains unless they fail DMARC authentication
  and (
    (
      sender.email.domain.root_domain in $high_trust_sender_root_domains
      and not headers.auth_summary.dmarc.pass
    )
    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
  )
attack_types:
  - "Credential Phishing"
  - "Malware/Ransomware"
tactics_and_techniques:
  - "Open redirect"
detection_methods:
  - "Sender analysis"
  - "URL analysis"
id: "4a8ebce6-8ec7-5e83-96e9-3f89d2c2e3ed"