Detection rules › Sublime MQL
Open redirect: Bitrix24 URL Path
Message contains use of the Bitrix24 redirect. This has been exploited in the wild for phishing.
Threat classification
Sublime's own taxonomy (not MITRE ATT&CK).
| Category | Values |
|---|---|
| Attack types | Credential Phishing |
| Tactics and techniques | Open redirect |
Event coverage
| Message attribute |
|---|
| body |
| body.links (collection) |
| headers.auth_summary |
| sender.email |
| type |
Rule body MQL
type.inbound
and any(body.links,
strings.istarts_with(.href_url.path, '/bitrix/')
and strings.iends_with(.href_url.path, '.php')
and strings.icontains(.href_url.query_params, 'goto=')
)
// negate highly trusted sender domains unless they fail DMARC authentication
and (
(
sender.email.domain.root_domain in $high_trust_sender_root_domains
and not headers.auth_summary.dmarc.pass
)
or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)
Detection logic
Scope: inbound message.
Message contains use of the Bitrix24 redirect. This has been exploited in the wild for phishing.
- inbound message
any of
body.linkswhere all hold:- .href_url.path starts with '/bitrix/'
- .href_url.path ends with '.php'
- .href_url.query_params contains 'goto='
any of:
all of:
- sender.email.domain.root_domain in $high_trust_sender_root_domains
not:
- headers.auth_summary.dmarc.pass
- sender.email.domain.root_domain not in $high_trust_sender_root_domains
Inspects: body.links, body.links[].href_url.path, body.links[].href_url.query_params, headers.auth_summary.dmarc.pass, sender.email.domain.root_domain, type.inbound. Sensors: strings.icontains, strings.iends_with, strings.istarts_with. Reference lists: $high_trust_sender_root_domains.
Indicators matched (3)
| Field | Match | Value |
|---|---|---|
strings.istarts_with | prefix | /bitrix/ |
strings.iends_with | suffix | .php |
strings.icontains | substring | goto= |