Open Redirect: predictiveresponse.net

Message contains use of the predictiveresponse.net open redirect. This has been exploited in the wild.

Sublime rule (View on GitHub)

 1name: "Open Redirect: predictiveresponse.net"
 2description: |
 3    Message contains use of the predictiveresponse.net 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 == "predictiveresponse.net"
10          and strings.icontains(.href_url.query_params, 'redirect=')
11          and not regex.icontains(.href_url.query_params,
12                                  'redirect=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*predictiveresponse\.net(?:\&|\/|$)'
13          )
14  )
15  and not sender.email.domain.root_domain == "predictiveresponse.net"
16  // negate use of predictiveresponse infra
17  and not any(headers.domains, .root_domain == "predictiveresponse.net")
18  and not any(headers.hops,
19              any(.fields,
20                  .name == "List-Unsubscribe"
21                  and strings.iends_with(.value, '@predictiveresponse.net>')
22              )
23  )
24  // negate highly trusted sender domains unless they fail DMARC authentication
25  and (
26    (
27      sender.email.domain.root_domain in $high_trust_sender_root_domains
28      and not headers.auth_summary.dmarc.pass
29    )
30    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
31  )  
32attack_types:
33  - "Credential Phishing"
34  - "Malware/Ransomware"
35tactics_and_techniques:
36  - "Open redirect"
37detection_methods:
38  - "Sender analysis"
39  - "URL analysis"
40id: "3474bb1b-8840-53b5-9582-3c9baf1b2d63"
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