Open redirect: IndiaTimes

 1name: "Open redirect: IndiaTimes"
 2description: |
 3    Message contains use of the IndiaTimes open redirect. This has been exploited in the wild.
 4references:
 5  - "https://www.strongestlayer.ai/India-Times-Hosting-Redirect-to-Newly-Discovered-Microsoft-Phishing-Site"
 6type: "rule"
 7severity: "medium"
 8source: |
 9  type.inbound
10  and any(body.links,
11          .href_url.domain.root_domain == "indiatimes.com"
12          and strings.icontains(.href_url.path, '/etl.php')
13          and strings.icontains(.href_url.query_params, 'url=')
14          // don't match on redirects to indiatimes.com
15          and not regex.icontains(.href_url.query_params,
16                                  'url=[^\&]+\.indiatimes\.com\b'
17          )
18  )
19  and (
20    not profile.by_sender().solicited
21    or (
22      profile.by_sender().any_messages_malicious_or_spam
23      and not profile.by_sender().any_messages_benign
24    )
25  )
26  
27  // negate highly trusted sender domains unless they fail DMARC authentication
28  and (
29    (
30      sender.email.domain.root_domain in $high_trust_sender_root_domains
31      and not headers.auth_summary.dmarc.pass
32    )
33    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
34  )  
35attack_types:
36  - "Credential Phishing"
37  - "Malware/Ransomware"
38tactics_and_techniques:
39  - "Open redirect"
40detection_methods:
41  - "Sender analysis"
42  - "URL analysis"
43id: "d5e2ca78-ef3a-54f1-9b24-3efca8c8e8ca"