sublimemediumRule

Brand impersonation: Dotloop

Impersonation of Dotloop, a real estate transaction management platform.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1598.003

initial-access

Detection Query

type.inbound
and (
  strings.ilike(sender.display_name, '*dotloop*')
  or strings.ilike(sender.email.domain.domain, '*dotloop*')
)
and sender.email.domain.root_domain not in~ ('dotloop.com', 'showingtime.com')
and (
  (
    profile.by_sender().prevalence in ("new", "outlier")
    and not profile.by_sender().solicited
  )
  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: Dotloop"
description: "Impersonation of Dotloop, a real estate transaction management platform."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and (
    strings.ilike(sender.display_name, '*dotloop*')
    or strings.ilike(sender.email.domain.domain, '*dotloop*')
  )
  and sender.email.domain.root_domain not in~ ('dotloop.com', 'showingtime.com')
  and (
    (
      profile.by_sender().prevalence in ("new", "outlier")
      and not profile.by_sender().solicited
    )
    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: "f997581a-ca08-5b21-8a52-ee0ca78fcea5"