Open Redirect: TikTok

 1name: "Open Redirect: TikTok"
 2description: |
 3    Message contains use of an open redirect on TikTok. 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 == "tiktok.com"
10      and strings.icontains(.href_url.query_params, 'target=')
11      and strings.icontains(.href_url.query_params, 'aid=')
12  )
13  // attempt to remove any FPs sent by TikTok actual
14  and not (
15    sender.email.domain.root_domain in ("tiktok.com")
16    and headers.auth_summary.dmarc.pass
17  )
18   
19  // negate highly trusted sender domains unless they fail DMARC authentication
20  and (
21    (
22      sender.email.domain.root_domain in $high_trust_sender_root_domains
23      and not headers.auth_summary.dmarc.pass
24    )
25    or sender.email.domain.root_domain not in $high_trust_sender_root_domains
26  )  
27attack_types:
28  - "Credential Phishing"
29  - "Malware/Ransomware"
30tactics_and_techniques:
31  - "Open redirect"
32detection_methods:
33  - "Sender analysis"
34  - "URL analysis"
35id: "d231d135-956c-5e6d-babe-71f847d29d1d"