Sublime Security high experimental mql

Link: Multistage landing - ClickUp abuse

Detects ClickUp documents that contain external links to suspicious domains including new domains, free file hosts, URL shorteners, or links that redirect to phishing pages or contain captchas.

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Detection Logic

type.inbound
and any(body.current_thread.links,
        .href_url.domain.domain == "doc.clickup.com"
        and (
          // landing page has been removed
          strings.istarts_with(ml.link_analysis(.).final_dom.display_text,
                               'This page is currently unavailable'
          )
          // inspection of links within the doc.clickup.com
          or any(filter(ml.link_analysis(.).final_dom.links,
                        .href_url.domain.root_domain != 'clickup.com'
                        and .href_url.domain.root_domain not in $org_domains
                 ),
                 (
                   // any of those links domains are new
                   network.whois(.href_url.domain).days_old < 30
                   // go to free file hosts
                   or .href_url.domain.root_domain in $free_file_hosts
                   or .href_url.domain.domain in $free_file_hosts

                   // go to free subdomains hosts
                   or (
                     .href_url.domain.root_domain in $free_subdomain_hosts
                     // where there is a subdomain
                     and .href_url.domain.subdomain is not null
                     and .href_url.domain.subdomain != "www"
                   )
                   // go to url shorteners
                   or .href_url.domain.root_domain in $url_shorteners
                   or .href_url.domain.root_domain in $social_landing_hosts
                   or .href_url.domain.domain in $url_shorteners
                   or .href_url.domain.domain in $social_landing_hosts
                   // or the page has been taken down
                   or (
                     // find any links that mention common "action" words
                     regex.icontains(.display_text,
                                     '(?:view
| click
| show
| access
| download
| goto
| Validate
| Va[il]idar
| login
| verify
| account)'
                     )
                     and (
                       // and when visiting those links, are phishing
                       ml.link_analysis(., mode="aggressive").credphish.disposition == "phishing"

                       // hit a captcha page
                       or ml.link_analysis(., mode="aggressive").credphish.contains_captcha

                       // or the page redirects to common website, observed when evasion happens
                       or (
                         length(ml.link_analysis(., mode="aggressive").redirect_history
                         ) > 0
                         and ml.link_analysis(., mode="aggressive").effective_url.domain.root_domain in $tranco_10k
                       )
                     )
                   )
                 )
          )
        )
)

Field Validations

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