Detection rules › Sublime MQL
Open redirect: bangkoksync.com
Message contains use of the bangkoksync.com open 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 == "bangkoksync.com"
and strings.icontains(.href_url.path, '/goto.php')
and regex.icontains(.href_url.query_params,
'url=(?:https?|(?:\/|%2f)(?:\/|%2f))'
)
and any(.href_url.query_params_decoded["url"],
strings.parse_url(.).domain.root_domain != "bangkoksync.com"
)
)
and not sender.email.domain.root_domain == "bangkoksync.com"
// 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 bangkoksync.com open redirect. This has been exploited in the wild.
- inbound message
any of
body.linkswhere all hold:- .href_url.domain.root_domain is 'bangkoksync.com'
- .href_url.path contains '/goto.php'
- .href_url.query_params matches 'url=(?:https?|(?:\\/|%2f)(?:\\/|%2f))'
any of
.href_url.query_params_decoded['url']where:- strings.parse_url(.).domain.root_domain is not 'bangkoksync.com'
not:
- sender.email.domain.root_domain is 'bangkoksync.com'
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, body.links[].href_url.query_params_decoded['url'], headers.auth_summary.dmarc.pass, sender.email.domain.root_domain, type.inbound. Sensors: regex.icontains, strings.icontains, strings.parse_url. Reference lists: $high_trust_sender_root_domains.
Indicators matched (4)
| Field | Match | Value |
|---|---|---|
body.links[].href_url.domain.root_domain | equals | bangkoksync.com |
strings.icontains | substring | /goto.php |
regex.icontains | regex | url=(?:https?|(?:\/|%2f)(?:\/|%2f)) |
sender.email.domain.root_domain | equals | bangkoksync.com |