sublimemediumRule

Brand impersonation: Silicon Valley Bank

Detects emails that impersonate Silicon Valley Bank

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1598.003 T1583.001

initial-access

Detection Query

type.inbound
and (
  regex.icontains(sender.email.domain.domain,
                  "(silicon(e)?.{0,10}(valley|bank)|svb)"
  )
  or strings.ilevenshtein(sender.display_name, 'svb') <= 1
)
and network.whois(sender.email.domain).days_old <= 30

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Brand impersonation: Silicon Valley Bank"
description: "Detects emails that impersonate Silicon Valley Bank"
type: "rule"
severity: "medium"
source: |
  type.inbound
  and (
    regex.icontains(sender.email.domain.domain,
                    "(silicon(e)?.{0,10}(valley|bank)|svb)"
    )
    or strings.ilevenshtein(sender.display_name, 'svb') <= 1
  )
  and network.whois(sender.email.domain).days_old <= 30
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "Impersonation: Brand"
  - "Lookalike domain"
  - "Social engineering"
detection_methods:
  - "Sender analysis"
  - "Whois"
id: "a01f61d9-a01a-548c-9a48-49f8d3732d05"