Detection rules › Sublime MQL

Link: Blogspot hosting explicit romance content

Severity
medium
Type
rule
Source
github.com/sublime-security/sublime-rules

Detects inbound messages containing links to Blogspot domains that host explicit romance content, identified through natural language processing of the message body.

Threat classification

Sublime's own taxonomy (not MITRE ATT&CK).

CategoryValues
Attack typesSpam
Tactics and techniquesFree subdomain host, Social engineering

Event coverage

Rule body MQL

type.inbound
and any(body.links, .href_url.domain.root_domain == "blogspot.com")
and (
  any(ml.nlu_classifier(body.current_thread.text).topics,
      .name == "Sexually Explicit Messages"
  )
)

Detection logic

Scope: inbound message.

Detects inbound messages containing links to Blogspot domains that host explicit romance content, identified through natural language processing of the message body.

  1. inbound message
  2. any of body.links where:
    • .href_url.domain.root_domain is 'blogspot.com'
  3. any of ml.nlu_classifier(body.current_thread.text).topics where:
    • .name is 'Sexually Explicit Messages'

Inspects: body.current_thread.text, body.links, body.links[].href_url.domain.root_domain, type.inbound. Sensors: ml.nlu_classifier.

Indicators matched (2)

FieldMatchValue
body.links[].href_url.domain.root_domainequalsblogspot.com
ml.nlu_classifier(body.current_thread.text).topics[].nameequalsSexually Explicit Messages