High Severity
Brand Impersonation: Google (QR Code)
Description
Detects messages using Google based lures, referencing or including a QR code from an Unsolicited sender. These messages often lead users to phishing sites or initiate unwanted downloads.
References
No references.
Sublime Security
Created Apr 3rd, 2024 • Last updated Jul 16th, 2025
Feed Source
Sublime Core Feed
Source
type.inbound
and length(body.current_thread.text) < 1000
and any([subject.subject, sender.display_name, body.current_thread.text],
regex.icontains(.,
'(\b2fa\b|\bQ.?R\.?\s?\b|MFA|Muti[ -]?Factor|(Auth(enticat|e|or|ion))?)'
)
)
and (
any(attachments,
(
.file_type in $file_types_images
or .file_type == "pdf"
or .file_type in~ $file_extensions_macros
)
and any(ml.logo_detect(.).brands, strings.starts_with(.name, "Google"))
)
or any(ml.logo_detect(beta.message_screenshot()).brands,
strings.starts_with(.name, "Google")
)
)
and any(attachments,
(
.file_type in $file_types_images
or .file_type == "pdf"
or .file_type in $file_extensions_macros
)
and (
any(file.explode(.),
regex.icontains(.scan.ocr.raw, 'scan|camera')
and regex.icontains(.scan.ocr.raw, '\bQR\b|Q\.R\.|barcode')
)
or (
any(file.explode(.),
(
.scan.qr.type is not null
and regex.contains(.scan.qr.data, '\.')
)
or (
any(file.explode(beta.message_screenshot()),
.scan.exiftool.image_height < 2000
and .scan.exiftool.image_width < 2000
and .scan.qr.type is not null
and regex.contains(.scan.qr.data, '\.')
)
)
)
)
)
)
and (
not profile.by_sender().solicited
or (
profile.by_sender().any_messages_malicious_or_spam
and not profile.by_sender().any_messages_benign
)
)
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 (
any(distinct(headers.hops, .authentication_results.dmarc is not null),
strings.ilike(.authentication_results.dmarc, "*fail")
)
)
)
or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
Playground
Test against your own EMLs or sample data.