sublimemediumRule

Brand impersonation: Dashlane

Impersonation of the password management software Dashlane.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1598.003

initial-access

Detection Query

type.inbound
and (
  regex.icontains(sender.display_name, '\bDashlane\b')
  or strings.ilike(sender.email.domain.domain, '*Dashlane*')
)
and sender.email.domain.root_domain not in~ ('dashlane.com')
and (
  profile.by_sender().prevalence in ("new", "outlier")
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)

// 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
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Brand impersonation: Dashlane"
description: "Impersonation of the password management software Dashlane."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and (
    regex.icontains(sender.display_name, '\bDashlane\b')
    or strings.ilike(sender.email.domain.domain, '*Dashlane*')
  )
  and sender.email.domain.root_domain not in~ ('dashlane.com')
  and (
    profile.by_sender().prevalence in ("new", "outlier")
    or (
      profile.by_sender().any_messages_malicious_or_spam
      and not profile.by_sender().any_messages_benign
    )
  )
  
  // 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"
  - "Social engineering"
detection_methods:
  - "Header analysis"
  - "Sender analysis"
id: "9e400937-4e7e-53fe-ad34-8393ab01890e"