Medium Severity

Link: Google Cloud Storage with zipper-interleaved tracking token

Description

Detects inbound emails containing links to storage.googleapis.com where the URL fragment or query string contains a highly specific alphanumeric token pattern. This structured token format is characteristic of a known phishing kit that abuses Google Cloud Storage to host and deliver malicious content, leveraging the trusted domain to bypass security filters.

References

No references.

Sublime Security
Created Oct 6th, 2026 • Last updated Oct 6th, 2026
Source
type.inbound
and any(body.links,
        .href_url.domain.domain == "storage.googleapis.com"
        // token in the fragment/query
        and any([.href_url.fragment, .href_url.query_params],
                regex.icontains(.,
                                '\b\d{7}[a-z]{2}\d{7,8}[a-z]{2}\d{9}[a-z]{2}\d{3,5}[a-z]{2}24[a-z]{2}[ru]\d{6}[a-z]{2}\b'
                )
        )
)
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