Medium Severity
Open Redirect: buildingengines.com
Description
Detects messages containing buildingengines.com redirect links that use the _redirectTo parameter to redirect users to malicious sites. This has been observed in phishing campaigns.
References
No references.
Sublime Security
Created Mar 18th, 2025 • Last updated Mar 18th, 2025
Feed Source
Sublime Core Feed
Source
type.inbound
and any(body.links,
// Look for buildingengines URLs
.href_url.domain.domain == "app.buildingengines.com"
and strings.icontains(.href_url.query_params, '_redirectTo=')
// Make sure it's not redirecting back to buildingengines.com
and not regex.icontains(.href_url.query_params, '_redirectTo=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*buildingengines\.com(?:\&|\/|$|%2f)')
)
// Exclude legitimate Building Engines domains as senders
and not sender.email.domain.root_domain == "buildingengines.com"
// negate highly trusted sender domains unless they fail DMARC authentication
and (
(
sender.email.domain.root_domain in $high_trust_sender_root_domains
and not headers.auth_summary.dmarc.pass
)
or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
Playground
Test against your own EMLs or sample data.