Open Redirect: eodcnetworkdirect.com

 1name: "Open Redirect: eodcnetworkdirect.com"
 2description: |
 3    Message contains use of the eodcnetworkdirect.com redirect. This has been exploited in the wild.
 4type: "rule"
 5severity: "medium"
 6source: |
 7  type.inbound
 8  and any(body.links,
 9      .href_url.domain.domain == "in.eodcnetworkdirect.com"
10      and strings.icontains(.href_url.query_params, '&url=')
11      and not regex.icontains(.href_url.domain.domain, '&url=[^\&]*eodcnetwork(?:direct\.com|\.org)(?:\&|\/|$)')
12  )
13  and not sender.email.domain.root_domain in ("eodcnetworkdirect.com", "eodcnetwork.org")
14  
15  // negate highly trusted sender domains unless they fail DMARC authentication
16  and (
17    (
18      sender.email.domain.root_domain in $high_trust_sender_root_domains
19      and not headers.auth_summary.dmarc.pass
20    )
21    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
22  )  
23attack_types:
24  - "Credential Phishing"
25  - "Malware/Ransomware"
26tactics_and_techniques:
27  - "Open redirect"
28detection_methods:
29  - "Sender analysis"
30  - "URL analysis"
31id: "ef31283e-69ab-5883-9d56-fd04df135347"