[PR #3050] changed rule: Brand Impersonation: Salesforce

Author: github-actions[bot]

detection-rules/3050_brand_impersonation_salesforce.yml

@@ -0,0 +1,67 @@
+name: "Brand Impersonation: Salesforce"
+description: "Detects impersonation of Salesforce through display name, email domain, or domain similarity, excluding legitimate Salesforce communications, training-related emails with proper authentication, and internal domain notifications."
+type: "rule"
+severity: "medium"
+source: |
+  type.inbound
+  and (
+    regex.icontains(sender.display_name, 'salesforce')
+    or strings.ilike(sender.display_name, "*salesforce*")
+    or strings.ilevenshtein(sender.display_name, 'salesforce') <= 2
+    or strings.ilike(sender.email.domain.domain, '*salesforce*')
+  )
+  and not (
+    (
+      // legitimate salesforce domains
+      sender.email.domain.root_domain in (
+        "salesforce.com",
+        "salesforceventures.com",
+        "tangocard.com" //https://www.tangocard.com/salesforce-partnership
+      )
+      and headers.auth_summary.dmarc.pass
+    )
+    // email related to salesforce training being offered
+    or (
+      (
+        regex.icontains(body.current_thread.text, "(training|bootcamp)")
+        or regex.icontains(subject.subject, "(training|bootcamp)")
+      )
+      and headers.auth_summary.dmarc.pass
+    )
+    // email from own domain with salesforce notification
+    or (
+      sender.email.domain.root_domain in $org_domains
+      and headers.auth_summary.dmarc.pass
+    )
+  )
+  and (
+    not (
+      coalesce(headers.auth_summary.dmarc.pass, false)
+      and not profile.by_sender().solicited
+    )
+  )
+  and not any(body.links, .href_url.domain.root_domain == "salesforce.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"
+tactics_and_techniques:
+  - "Impersonation: Brand"
+  - "Lookalike domain"
+  - "Social engineering"
+detection_methods:
+  - "Content analysis"
+  - "Header analysis"
+  - "Sender analysis"
+id: "c5f0e666-81f0-5d17-a470-12ab75113631"
+og_id: "736dfb87-1f99-5cdb-aefc-392257376f3d"
+testing_pr: 3050
+testing_sha: 036043c2825d5b375dc3917cddf13913200cdb52