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Detection rules › Sublime MQL

DLP: MAC Address

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

Detects messages containing MAC addresses.

Event coverage

Message attribute
body.current_thread
subject
type

Rule body MQL

type.outbound
and any([body.current_thread.text, subject.subject],
        // MAC address: XX:XX:XX:XX:XX:XX or XX-XX-XX-XX-XX-XX
        regex.contains(., '\b(?:[0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}\b')
)
and any([body.current_thread.text, subject.subject],
        regex.icontains(., 'mac\s+address|physical\s+address|hardware\s+address')
)

Detection logic

Scope: outbound message.

Detects messages containing MAC addresses.

  1. outbound message
  2. any of [body.current_thread.text, subject.subject] where:
    • . matches '\\b(?:[0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}\\b'
  3. any of [body.current_thread.text, subject.subject] where:
    • . matches 'mac\\s+address|physical\\s+address|hardware\\s+address'

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

Indicators matched (2)

FieldMatchValue
regex.containsregex\b(?:[0-9A-Fa-f]{2}[:-]){5}[0-9A-Fa-f]{2}\b
regex.icontainsregexmac\s+address|physical\s+address|hardware\s+address