Detection rules › Sublime MQL

DLP: Slovenia Tax Identification Number

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

Detects messages containing Slovenian Tax Identification Numbers.

Event coverage

Rule body MQL

type.outbound
and any([body.current_thread.text, subject.subject],
        // Slovenian Tax ID: 8 digits
        regex.contains(., '\b\d{8}\b')
)
and any([body.current_thread.text, subject.subject],
        regex.icontains(., 'davčna\s+številka|tax\s+ID|TIN')
)
and (
  strings.icontains(sender.email.domain.tld, "si")
  or strings.icontains(body.current_thread.text, "slovenia")
)

Detection logic

Scope: outbound message.

Detects messages containing Slovenian Tax Identification Numbers.

  1. outbound message
  2. any of [body.current_thread.text, subject.subject] where:
    • . matches '\\b\\d{8}\\b'
  3. any of [body.current_thread.text, subject.subject] where:
    • . matches 'davčna\\s+številka|tax\\s+ID|TIN'
  4. any of:
    • sender.email.domain.tld contains 'si'
    • body.current_thread.text contains 'slovenia'

Inspects: body.current_thread.text, sender.email.domain.tld, subject.subject, type.outbound. Sensors: regex.contains, regex.icontains, strings.icontains.

Indicators matched (4)

FieldMatchValue
regex.containsregex\b\d{8}\b
regex.icontainsregexdavčna\s+številka|tax\s+ID|TIN
strings.icontainssubstringsi
strings.icontainssubstringslovenia