sublimelowRule

Open redirect: Slack

Message contains use of Slack's open redirect but the sender is not Slack.

MITRE ATT&CK

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

Detection Query

type.inbound
and 0 < length(body.links) < 10
and sender.email.domain.root_domain not in~ (
  'atlassian.net',
  'slack.com',
  'soundtrap.com'
)
and any(body.links,
        .href_url.domain.domain == 'slack-redir.net'
        and strings.ilike(.href_url.query_params, '*url=*')
)

Data Sources

Email MessagesEmail HeadersEmail Attachments

Platforms

Tags

Attack surface reduction

Raw Content

name: "Open redirect: Slack"
description: |
  Message contains use of Slack's open redirect but the sender is not Slack.
type: "rule"
severity: "low"
source: |
  type.inbound
  and 0 < length(body.links) < 10
  and sender.email.domain.root_domain not in~ (
    'atlassian.net',
    'slack.com',
    'soundtrap.com'
  )
  and any(body.links,
          .href_url.domain.domain == 'slack-redir.net'
          and strings.ilike(.href_url.query_params, '*url=*')
  )
tags:
  - "Attack surface reduction"
attack_types:
  - "Credential Phishing"
  - "Malware/Ransomware"
tactics_and_techniques:
  - "Open redirect"
detection_methods:
  - "Sender analysis"
  - "URL analysis"
id: "1b15f4a3-e7ab-56c1-9ba3-f63788389ebe"