sublimemediumRule

Link: IPFS

Detects messages containing links that have 'ipfs' in the domain, or unanalyzed links that contain 'ipfs' in the url. IPFS has been recently observed hosting phishing sites.

MITRE ATT&CK

T1566 T1566.001 T1566.002 T1598 T1204.002 T1486

Detection Query

type.inbound
and any(body.links,
        // Any body link domains contain "ipfs"
        (
          strings.icontains(.href_url.domain.domain, "ipfs")
          and not .href_url.domain.root_domain == "ipfs.com"
        )

        // Or the path contains ipfs anchored to a leading and trailing '-', '/', '.'
        or (
          regex.icontains(.href_url.query_params, '[\.-/]ipfs[\.-/]')
          and .href_url.domain.domain not in $org_domains
          and (
            (
              // don't include high rep domains
              .href_url.domain.domain not in $tranco_1m
              and .href_url.domain.domain not in $umbrella_1m
            )
            // if it's in Tranco or Umbrella, still include it if it's one of these
            or .href_url.domain.domain in $free_file_hosts
            or .href_url.domain.root_domain in $free_file_hosts
            or .href_url.domain.root_domain in $free_subdomain_hosts
          )
        )
)

// adding negation block for legitimate domains with ipfs in their name
and not sender.email.domain.domain in ("shipfsl.com")

// negate ipfs.com issues
and not any(recipients.to, .email.domain.domain == "ipfs.com")
and not (
  sender.email.domain.root_domain is not null
  and sender.email.domain.root_domain == "ipfs.com"
  and headers.auth_summary.dmarc.pass
)
and (
  not profile.by_sender().solicited
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)
and not profile.by_sender().any_messages_benign

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

References

Raw Content

name: "Link: IPFS"
description: "Detects messages containing links that have 'ipfs' in the domain, or unanalyzed links that contain 'ipfs' in the url. IPFS has been recently observed hosting phishing sites."
references:
  - "https://securelist.com/ipfs-phishing/109158/"
  - "https://docs.ipfs.tech/how-to/address-ipfs-on-web/"
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(body.links,
          // Any body link domains contain "ipfs"
          (
            strings.icontains(.href_url.domain.domain, "ipfs")
            and not .href_url.domain.root_domain == "ipfs.com"
          )
  
          // Or the path contains ipfs anchored to a leading and trailing '-', '/', '.'
          or (
            regex.icontains(.href_url.query_params, '[\.-/]ipfs[\.-/]')
            and .href_url.domain.domain not in $org_domains
            and (
              (
                // don't include high rep domains
                .href_url.domain.domain not in $tranco_1m
                and .href_url.domain.domain not in $umbrella_1m
              )
              // if it's in Tranco or Umbrella, still include it if it's one of these
              or .href_url.domain.domain in $free_file_hosts
              or .href_url.domain.root_domain in $free_file_hosts
              or .href_url.domain.root_domain in $free_subdomain_hosts
            )
          )
  )
  
  // adding negation block for legitimate domains with ipfs in their name
  and not sender.email.domain.domain in ("shipfsl.com")
  
  // negate ipfs.com issues
  and not any(recipients.to, .email.domain.domain == "ipfs.com")
  and not (
    sender.email.domain.root_domain is not null
    and sender.email.domain.root_domain == "ipfs.com"
    and headers.auth_summary.dmarc.pass
  )
  and (
    not profile.by_sender().solicited
    or (
      profile.by_sender().any_messages_malicious_or_spam
      and not profile.by_sender().any_messages_benign
    )
  )
  and not profile.by_sender().any_messages_benign
attack_types:
  - "Credential Phishing"
  - "Malware/Ransomware"
tactics_and_techniques:
  - "Free file host"
  - "Free subdomain host"
  - "IPFS"
detection_methods:
  - "Sender analysis"
  - "URL analysis"
id: "19fa6442-83b9-5479-ba04-61906b595929"