Open redirect: Newegg

calendar May 23, 2025  ยท
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Message contains use of the Newegg open redirect, but the sender is not Newegg. This has been exploited in the wild.

Sublime rule (View on GitHub)

 1name: "Open redirect: Newegg"
 2description: |
 3    Message contains use of the Newegg open redirect, but the sender is not Newegg. 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 == 'newegg.com'
10          and .href_url.path =~ '/rts/go2.aspx'
11          and strings.icontains(.href_url.query_params, "x=")
12  )
13  and sender.email.domain.root_domain != 'newegg.com'
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: "3554a43f-6f5c-50e7-8c70-d3a616d8809e"
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