• Sublime Core Feed

Description

Detects callback scam messages sent through Amazon Web Services Simple Notification Service (SNS) that impersonate well-known brands like McAfee, Norton, PayPal, and others. The rule identifies fraudulent purchase receipts or service notifications containing phone numbers to solicit victim callbacks, potentially leading to financial theft or malware installation.

References

No references.

Sublime Security
Created Mar 26th, 2026 • Last updated Mar 26th, 2026
Source
type.inbound
and sender.email.email == "no-reply@sns.amazonaws.com"
and not coalesce(strings.icontains(headers.return_path.local_part,
                                   'aws-ses-bounces'
                 ),
                 false
)
and (
  any(ml.nlu_classifier(body.current_thread.text).intents,
      .name == "callback_scam" and .confidence != "low"
  )
  or (
    regex.icontains(body.current_thread.text,
                    (
                      "mcafee|n[o0]rt[o0]n|geek.{0,5}squad|paypal|ebay|symantec|best buy|lifel[o0]ck"
                    )
    )
    and (
      3 of (
        strings.ilike(body.current_thread.text, '*purchase*'),
        strings.ilike(body.current_thread.text, '*payment*'),
        strings.ilike(body.current_thread.text, '*transaction*'),
        strings.ilike(body.current_thread.text, '*subscription*'),
        strings.ilike(body.current_thread.text, '*antivirus*'),
        strings.ilike(body.current_thread.text, '*order*'),
        strings.ilike(body.current_thread.text, '*support*'),
        strings.ilike(body.current_thread.text, '*receipt*'),
        strings.ilike(body.current_thread.text, '*invoice*'),
        strings.ilike(body.current_thread.text, '*call*'),
        strings.ilike(body.current_thread.text, '*cancel*'),
        strings.ilike(body.current_thread.text, '*renew*'),
        strings.ilike(body.current_thread.text, '*refund*'),
        strings.ilike(body.current_thread.text, '*host key*')
      )
    )
    // phone number regex
    and any([body.current_thread.text, subject.subject],
            regex.icontains(.,
                            '\+?([ilo0-9]{1}.)?\(?[ilo0-9]{3}?\)?.[ilo0-9]{3}.?[ilo0-9]{4}',
                            '\+?([ilo0-9]{1,2})?\s?\(?\d{3}\)?[\s\.\-⋅]{0,5}[ilo0-9]{3}[\s\.\-⋅]{0,5}[ilo0-9]{4}'
            )
    )
  )
)
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