Open Redirect: PIRL San Diego

calendar Oct 2, 2024  ยท
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Message contains use of the PIRL San Diego open redirect. This has been exploited in the wild.

Sublime rule (View on GitHub)

 1name: "Open Redirect: PIRL San Diego"
 2description: |
 3    Message contains use of the PIRL San Diego open 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.root_domain == "pirlsandiego.net"
10          and strings.icontains(.href_url.path, '/LinkClick.aspx')
11          and strings.icontains(.href_url.url, 'link=')
12  )
13  and (
14    not profile.by_sender().solicited
15    or (
16      profile.by_sender().any_messages_malicious_or_spam
17      and not profile.by_sender().any_false_positives
18    )
19  )
20  // negate highly trusted sender domains unless they fail DMARC authentication
21  and (
22    (
23      sender.email.domain.root_domain in $high_trust_sender_root_domains
24      and not headers.auth_summary.dmarc.pass
25    )
26    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
27  )  
28attack_types:
29  - "Credential Phishing"
30  - "Malware/Ransomware"
31tactics_and_techniques:
32  - "Open redirect"
33detection_methods:
34  - "Sender analysis"
35  - "URL analysis"
36id: "a057d64c-71a1-554a-8ff1-7016d5cae8cf"
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