Create open_redirect_slubnaglowie.yml (#2081)

Co-authored-by: ID Generator <[email protected]>

detection-rules/open_redirect_slubnaglowie.yml

@@ -0,0 +1,42 @@
+name: "Open redirect: slubnaglowie.pl"
+description: "Message contains use of a slubnaglowie.pl redirect. This redirection has been abused by threat actors in the wild."
+type: "rule"
+severity: "medium"
+source: |
+  type.inbound
+  and any(body.links,
+          .href_url.domain.root_domain == "slubnaglowie.pl"
+          and .href_url.path == "/przejdz" // "to go" or "to move/proceed" in Polish
+          and strings.icontains(.href_url.query_params, 'url=')
+  )
+  and (
+    not profile.by_sender().solicited
+    or (
+      profile.by_sender().any_messages_malicious_or_spam
+      and not profile.by_sender().any_false_positives
+    )
+  )
+  
+  // negate highly trusted sender domains unless they fail DMARC authentication
+  and (
+    (
+      (
+        sender.email.domain.root_domain in $high_trust_sender_root_domains
+        or sender.email.domain.root_domain == "slubnaglowie.pl"
+      )
+      and not headers.auth_summary.dmarc.pass
+    )
+    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
+  )
+attack_types:
+  - "Credential Phishing"
+tactics_and_techniques:
+  - "Evasion"
+  - "Open redirect"
+  - "Social engineering"
+detection_methods:
+  - "Content analysis"
+  - "Header analysis"
+  - "Sender analysis"
+  - "URL analysis"
+id: "2ec356d0-d7d8-5997-acd4-3118accc6e02"