Open Redirect: artkaderne

calendar May 23, 2025  ยท
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Message contains use of an open redirect on artkaderne.dk. This has been exploited in the wild.

Sublime rule (View on GitHub)

 1name: "Open Redirect: artkaderne"
 2description: |
 3    Message contains use of an open redirect on artkaderne.dk. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9      .href_url.domain.root_domain == "artkaderne.dk"
10      and strings.icontains(.href_url.query_params, "refurl=")
11  )
12  and not sender.email.domain.root_domain == "artkaderne.dk"
13  
14  // negate highly trusted sender domains unless they fail DMARC authentication
15  and (
16    (
17      sender.email.domain.root_domain in $high_trust_sender_root_domains
18      and not headers.auth_summary.dmarc.pass
19    )
20    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
21  )  
22attack_types:
23  - "Credential Phishing"
24  - "Malware/Ransomware"
25tactics_and_techniques:
26  - "Open redirect"
27detection_methods:
28  - "Sender analysis"
29  - "URL analysis"
30id: "cc16a3f4-67a4-5fcb-bee3-57e4683efbee"
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