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Detection rules › Sublime MQL

DLP: Canada Driver's License Number

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

Detects messages containing Canadian driver's license numbers.

Event coverage

Message attribute
body.current_thread
subject
type

Rule body MQL

type.outbound
and any([body.current_thread.text, subject.subject],
        // Driver's license varies by province, typically 15-16 alphanumeric characters
        regex.contains(., '\b[A-Z0-9]{15,16}\b')
)
and any([body.current_thread.text, subject.subject],
        regex.icontains(., 'driver.?s?\s+licen[cs]e|DL\s+number|permis\s+de\s+conduire')
)

Detection logic

Scope: outbound message.

Detects messages containing Canadian driver's license numbers.

  1. outbound message
  2. any of [body.current_thread.text, subject.subject] where:
    • . matches '\\b[A-Z0-9]{15,16}\\b'
  3. any of [body.current_thread.text, subject.subject] where:
    • . matches 'driver.?s?\\s+licen[cs]e|DL\\s+number|permis\\s+de\\s+conduire'

Inspects: body.current_thread.text, subject.subject, type.outbound. Sensors: regex.contains, regex.icontains.

Indicators matched (2)

FieldMatchValue
regex.containsregex\b[A-Z0-9]{15,16}\b
regex.icontainsregexdriver.?s?\s+licen[cs]e|DL\s+number|permis\s+de\s+conduire