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Update Emp Imp Payroll Fraud rule to look for SDN in subject as well #4499

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Update Emp Imp Payroll Fraud rule to look for SDN in subject as well #4499

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6 changes: 4 additions & 2 deletions detection-rules/impersonation_employee_payroll_fraud.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -6,10 +6,12 @@ type: "rule"
severity: "high"
source: |
type.inbound

// ensure the display name contains a space to avoid single named process accounts eg. 'billing, payment'
and strings.contains(sender.display_name, " ")
and sender.display_name in~ $org_display_names
and (
sender.display_name in~ $org_display_names
or subject.base in~ $org_display_names
)
and length(attachments) == 0
and length(body.links) < 10
and length(body.current_thread.text) < 800
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