Create impersonation_sam_sba_federal_registration.yml - #5057
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….gov and SBA federal registration
Tightening up regex and taking out `sam registration` branch
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Tagging a good amount of FNs from this rule, results look to be 100% TPs. L30D and Multi-Hunt are up to date. Marking review needed. |
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… federal registration
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…SAM.gov and SBA federal registration
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Description
Detects inbound messages impersonating SAM.gov or the Small Business Administration by matching sender display names against known spoofed naming patterns (e.g. sba-support, sam registration/renewal) or by identifying sam.gov references paired with an embedded 'renew entity' image lure. Legitimate senders from verified sba.gov, sam.gov, or other high-trust domains that pass DMARC authentication are excluded.
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