• Sublime Core Feed
Medium Severity

Suspicious recipient pattern and language with low reputation link to login

Labels

Credential Phishing
Social engineering
Computer Vision
Content analysis
Header analysis
Natural Language Understanding
Optical Character Recognition
Sender analysis
URL analysis
URL screenshot

Description

Message contains a suspicious recipient pattern, financial or urgent language, and a suspicious link, with a login page and confusable characters or multiple redirects.

References

No references.

Sublime Security
Created Apr 30th, 2024 • Last updated Apr 30th, 2024
Feed Source
Sublime Core Feed
Source
GitHub
type.inbound
and any(body.links,
        (
          (
            .href_url.domain.root_domain not in $tranco_1m
            and .href_url.domain.valid
            and .href_url.domain.root_domain not in $org_domains
            and .href_url.domain.root_domain not in $high_trust_sender_root_domains
          )
          or .href_url.domain.tld in $suspicious_tlds
        )
        and (
          ml.link_analysis(.).credphish.contains_login
          and (
            ml.link_analysis(.).final_dom.display_text != strings.replace_confusables(ml.link_analysis(.
                                                                                       ).final_dom.display_text
            )
            or length(ml.link_analysis(.).redirect_history) > 1
          )
        )
)
and any(ml.nlu_classifier(body.current_thread.text).entities,
        .name in ("financial", "urgency")
)
and (
  (
    length(recipients.to) == 0
    or length(recipients.bcc) > 0
    or (
      all(recipients.to, .email.domain.valid == false)
      and all(recipients.cc, .email.domain.valid == false)
    )
  )
)
and all(body.links,
        .href_url.domain.root_domain != sender.email.domain.root_domain
)
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