sublimemediumRule

Service abuse: Google OAuth with suspicious redirect destination

Detects messages containing Google OAuth links with prompt=none parameter that redirect to suspicious domains including free file hosts, free subdomain providers, or self-service creation platforms.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1036 T1027

defense-evasioninitial-access

Detection Query

type.inbound
and any(body.links,
        .href_url.domain.domain == "accounts.google.com"
        and strings.istarts_with(.href_url.path, '/o/oauth2/v2/auth')
        and strings.icontains(.href_url.url, 'prompt=none')
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Service abuse: Google OAuth with suspicious redirect destination"
description: "Detects messages containing Google OAuth links with prompt=none parameter that redirect to suspicious domains including free file hosts, free subdomain providers, or self-service creation platforms."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(body.links,
          .href_url.domain.domain == "accounts.google.com"
          and strings.istarts_with(.href_url.path, '/o/oauth2/v2/auth')
          and strings.icontains(.href_url.url, 'prompt=none')
  )
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "Evasion"
  - "Free file host"
  - "Free subdomain host"
  - "Open redirect"
  - "Social engineering"
detection_methods:
  - "URL analysis"
  - "Threat intelligence"
id: "462764c9-f0bc-5fe9-abe4-04db8adc4874"