Observed IOC: Malicious domains in body links

calendar Apr 24, 2026  ·
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Detects inbound messages containing links to known malicious domains in the message body. IOC list is automatically managed and hashed by the IOC pipeline from the private threat intelligence feed.

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 1name: "Observed IOC: Malicious domains in body links"
 2description: "Detects inbound messages containing links to known malicious domains in the message body. IOC list is automatically managed and hashed by the IOC pipeline from the private threat intelligence feed."
 3type: "rule"
 4severity: "high"
 5source: |
 6  // AUTO-GENERATED IOC LIST - DO NOT EDIT MANUALLY
 7  // Managed by automated IOC system
 8  type.inbound
 9  and any(body.current_thread.links,
10          hash.sha256(.href_url.domain.domain) in (
11            '358871a6a4b575d4943918cc1cb7cfc82b6c93eb7b926bee522bc97b013f8710', // Observed malicious domain in message body links
12            '96cf4453229b1cdcc1fd94d07260c037a57b999ea93d6b6f360f655305a4ad86' // Observed malicious domain in message body links
13          )
14  )  
15
16attack_types:
17  - "Credential Phishing"
18  - "Malware/Ransomware"
19tactics_and_techniques:
20  - "Evasion"
21  - "Social engineering"
22detection_methods:
23  - "URL analysis"
24  - "Content analysis"
25id: "e4f5a6b7-c8d9-4e1f-8a3b-c4d5e6f7a8b9"
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