sublimelowRule

Attachment: EML with SharePoint files shared from GoDaddy federated tenants

Detects EML attachments containing SharePoint links with 'netorg' subdomain patterns, which may indicate suspicious redirection tactics or domain abuse.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1036 T1027 T1598.003

defense-evasioninitial-access

Detection Query

type.inbound
and length(filter(attachments,
                  .file_extension == "eml" or .content_type == "message/rfc822"
           )
) == 1
and any(attachments,
        any(file.parse_eml(.).body.links,
            strings.starts_with(.href_url.domain.subdomain, 'netorg')
            and .href_url.domain.root_domain == "sharepoint.com"
        )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Attachment: EML with SharePoint files shared from GoDaddy federated tenants"
description: "Detects EML attachments containing SharePoint links with 'netorg' subdomain patterns, which may indicate suspicious redirection tactics or domain abuse."
type: "rule"
severity: "low"
source: |
  type.inbound
  and length(filter(attachments,
                    .file_extension == "eml" or .content_type == "message/rfc822"
             )
  ) == 1
  and any(attachments,
          any(file.parse_eml(.).body.links,
              strings.starts_with(.href_url.domain.subdomain, 'netorg')
              and .href_url.domain.root_domain == "sharepoint.com"
          )
  )
attack_types:
  - "Credential Phishing"
tactics_and_techniques:
  - "Evasion"
  - "Impersonation: Brand"
  - "Social engineering"
detection_methods:
  - "File analysis"
  - "URL analysis"
  - "Content analysis"
id: "02c1f590-40f0-5db3-a8de-26bc1c1d9fc0"