Create open_redirect_typedrawers.yml

detection-rules/open_redirect_typedrawers.yml

@@ -0,0 +1,59 @@
+name: "Open redirect: typedrawers.com"
+description: "Detects messages containing links or QR codes pointing to typedrawers.com/home/leaving with target parameter, sent from non-trusted domains or authenticated sources failing DMARC checks. Considers sender reputation and requires either unsolicited contact or prior malicious activity without false positives."
+type: "rule"
+severity: "medium"
+source: |
+  type.inbound
+  and (
+    any(body.links,
+        .href_url.domain.root_domain == "typedrawers.com"
+        and .href_url.path == "/home/leaving"
+        and strings.icontains(.href_url.query_params, 'target=')
+    )
+    or any(attachments,
+           (
+             .file_type in $file_types_images
+             or .file_extension in $file_extensions_macros
+             or .file_type == "pdf"
+           )
+           and any(file.explode(.),
+                   .scan.qr.type == "url"
+                   and .scan.qr.url.domain.root_domain == "typedrawers.com"
+                   and .scan.qr.url.path == "/home/leaving"
+                   and strings.icontains(.scan.qr.url.query_params, 'target=')
+           )
+    )
+  )
+  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 == "typedrawers.com"
+      )
+      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"
+  - "QR code"
+  - "Social engineering"
+detection_methods:
+  - "Content analysis"
+  - "File analysis"
+  - "QR code analysis"
+  - "Sender analysis"
+id: "158d9e95-4ce4-58c7-83ce-56e5942db1e6"