Detection rules › Sublime MQL
Open redirect: ijf.org
Message contains use of the ijf.org redirect. This has been exploited in the wild.
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) |
| headers.auth_summary |
| sender.email |
| type |
Rule body MQL
type.inbound
and any(body.links,
.href_url.domain.root_domain == "ijf.org"
and strings.istarts_with(.href_url.path, '/cookies_agree')
and strings.icontains(.href_url.query_params, 'backTo=')
and not regex.icontains(.href_url.query_params,
'backTo=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*ijf\.org(?:\&|\/|$|%2f)'
)
)
and not sender.email.domain.root_domain == "ijf.org"
// 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 $high_trust_sender_root_domains
)
Detection logic
Scope: inbound message.
Message contains use of the ijf.org redirect. This has been exploited in the wild.
- inbound message
any of
body.linkswhere all hold:- .href_url.domain.root_domain is 'ijf.org'
- .href_url.path starts with '/cookies_agree'
- .href_url.query_params contains 'backTo='
not:
- .href_url.query_params matches 'backTo=(?:https?(?:%3a|:))?(?:%2f|\\/){2}[^&]*ijf\\.org(?:\\&|\\/|$|%2f)'
not:
- sender.email.domain.root_domain is 'ijf.org'
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.domain.root_domain, body.links[].href_url.path, body.links[].href_url.query_params, headers.auth_summary.dmarc.pass, sender.email.domain.root_domain, type.inbound. Sensors: regex.icontains, strings.icontains, strings.istarts_with. Reference lists: $high_trust_sender_root_domains.
Indicators matched (5)
| Field | Match | Value |
|---|---|---|
body.links[].href_url.domain.root_domain | equals | ijf.org |
strings.istarts_with | prefix | /cookies_agree |
strings.icontains | substring | backTo= |
regex.icontains | regex | backTo=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*ijf\.org(?:\&|\/|$|%2f) |
sender.email.domain.root_domain | equals | ijf.org |