Detection rules › Sublime MQL
Open redirect: Slack
Message contains use of Slack's open redirect but the sender is not Slack.
Threat classification
Sublime's own taxonomy (not MITRE ATT&CK).
| Category | Values |
|---|---|
| Attack types | Credential Phishing, Malware/Ransomware |
| Tactics and techniques | Open redirect |
Event coverage
| Message attribute |
|---|
| body |
| body.links (collection) |
| sender.email |
| type |
Rule body MQL
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=*')
)
Detection logic
Scope: inbound message.
Message contains use of Slack's open redirect but the sender is not Slack.
- inbound message
all of:
- length(body.links) > 0
- length(body.links) < 10
- sender.email.domain.root_domain not in ('atlassian.net', 'slack.com', 'soundtrap.com')
any of
body.linkswhere all hold:- .href_url.domain.domain is 'slack-redir.net'
- .href_url.query_params matches '*url=*'
Inspects: body.links, body.links[].href_url.domain.domain, body.links[].href_url.query_params, sender.email.domain.root_domain, type.inbound. Sensors: strings.ilike.
Indicators matched (5)
| Field | Match | Value |
|---|---|---|
sender.email.domain.root_domain | member | atlassian.net |
sender.email.domain.root_domain | member | slack.com |
sender.email.domain.root_domain | member | soundtrap.com |
body.links[].href_url.domain.domain | equals | slack-redir.net |
strings.ilike | substring | *url=* |