sublimemediumRule

Service abuse: Google Groups callback scam

Detects inbound messages originating from Google Groups that contain high-confidence callback scam content, identifying abuse of the legitimate service to distribute fraudulent callback requests.

MITRE ATT&CK

T1566.003 T1598 T1566

initial-access

Detection Query

type.inbound
and sender.email.domain.domain == "groups.google.com"
and any(ml.nlu_classifier(body.current_thread.text).intents,
        .name == "callback_scam" and .confidence == "high"
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Service abuse: Google Groups callback scam"
description: "Detects inbound messages originating from Google Groups that contain high-confidence callback scam content, identifying abuse of the legitimate service to distribute fraudulent callback requests."
type: "rule"
severity: "medium"
source: |
  type.inbound
  and sender.email.domain.domain == "groups.google.com"
  and any(ml.nlu_classifier(body.current_thread.text).intents,
          .name == "callback_scam" and .confidence == "high"
  )
attack_types:
  - "Callback Phishing"
tactics_and_techniques:
  - "Free email provider"
  - "Social engineering"
detection_methods:
  - "Natural Language Understanding"
  - "Sender analysis"
id: "e74a05b8-6e63-5921-bd42-6abe2c7a3e0e"