Create impersonation_brand_wix.yml (#3046)

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

Author: 3 people

detection-rules/impersonation_brand_wix.yml

@@ -0,0 +1,42 @@
+name: "Brand impersonation: Wix"
+description: "Detects messages impersonating Wix by using similar display names or domain names, while not originating from legitimate WIX domains or failing DMARC authentication from trusted senders."
+type: "rule"
+severity: "medium"
+source: |
+  type.inbound
+  and (
+    regex.icontains(sender.display_name, '^WIX\b')
+    or strings.ilike(sender.email.domain.domain, 'WIX')
+  )
+  and not (
+    (
+      sender.email.domain.root_domain in~ (
+        "wix.com",
+        "wixforms.com",
+        "wixemails.com",
+        "wixanswers.com",
+        "wix-groups.com"
+      )
+      and headers.auth_summary.dmarc.pass
+    )
+  )
+  and not profile.by_sender().solicited
+  // 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"
+tactics_and_techniques:
+  - "Impersonation: Brand"
+  - "Lookalike domain"
+  - "Social engineering"
+detection_methods:
+  - "Header analysis"
+  - "Sender analysis"
+id: "45e7b99f-94fc-5ae4-b5c9-ebfb59b04fe9"