Add detection rule for AuthentiSign impersonation #3718
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This rule detects messages impersonating AuthentiSign based on various criteria, including display name, domain, subject, and body content. It identifies potential phishing and fraud attempts originating from non-AuthentiSign or spoofed domains.
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Requested logo coverage & can add logic after request is complete. Link is behind sendgrid so final dom could help but will need to lean on it after test rules review. |
missingn0pe
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Added RE/FWD negations & additional conditions for current thread.
Switch "sign" string to body.links display text
github-actions
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github-actions
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BE improvement allows to return to simple wording in this case. Leaving obfuscation strings as a failsafe.
github-actions
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github-actions
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This rule detects messages impersonating AuthentiSign based on various criteria, including display name, domain, subject, and body content. It identifies potential phishing and fraud attempts originating from non-AuthentiSign or spoofed domains.
Associated samples
- Sample 1
- Sample 2
Associated hunts
- Hunt 1
- Hunt 2