sublimemediumRule

Open redirect: Avast

Detects emails containing links to avast.com leveraging an open redirect

MITRE ATT&CK

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

Detection Query

type.inbound
and any(body.links,
        .href_url.domain.root_domain == "avast.com"
        and strings.contains(.href_url.query_params,
                             "DisplayRedirectCustomPage"
        )
)
and sender.email.domain.root_domain != "avast.com"
and (
  not profile.by_sender().solicited
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Raw Content

name: "Open redirect: Avast"
description: "Detects emails containing links to avast.com leveraging an open redirect"
type: "rule"
severity: "medium"
source: |
  type.inbound
  and any(body.links,
          .href_url.domain.root_domain == "avast.com"
          and strings.contains(.href_url.query_params,
                               "DisplayRedirectCustomPage"
          )
  )
  and sender.email.domain.root_domain != "avast.com"
  and (
    not profile.by_sender().solicited
    or (
      profile.by_sender().any_messages_malicious_or_spam
      and not profile.by_sender().any_messages_benign
    )
  )
attack_types:
  - "Credential Phishing"
  - "Malware/Ransomware"
tactics_and_techniques:
  - "Open redirect"
detection_methods:
  - "Sender analysis"
  - "URL analysis"
id: "5f635658-19be-5112-a47b-f8c9bd271999"