Brand impersonation: Dashlane

 1name: "Brand impersonation: Dashlane"
 2description: "Impersonation of the password management software Dashlane."
 3type: "rule"
 4severity: "medium"
 5source: |
 6  type.inbound
 7  and (
 8    regex.icontains(sender.display_name, '\bDashlane\b')
 9    or strings.ilike(sender.email.domain.domain, '*Dashlane*')
10  )
11  and sender.email.domain.root_domain not in~ ('dashlane.com')
12  and (
13    profile.by_sender().prevalence in ("new", "outlier")
14    or (
15      profile.by_sender().any_messages_malicious_or_spam
16      and not profile.by_sender().any_false_positives
17    )
18  )
19  
20  // negate highly trusted sender domains unless they fail DMARC authentication
21  and (
22    (
23      sender.email.domain.root_domain in $high_trust_sender_root_domains
24      and not headers.auth_summary.dmarc.pass
25    )
26    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
27  )  
28
29attack_types:
30  - "Credential Phishing"
31tactics_and_techniques:
32  - "Impersonation: Brand"
33  - "Social engineering"
34detection_methods:
35  - "Header analysis"
36  - "Sender analysis"
37id: "9e400937-4e7e-53fe-ad34-8393ab01890e"