Rule History

alert dns $HOME_NET any -> any any (msg:"ET PHISHING Fake IRS Scam Domain in DNS Lookup (ustaxnumber .org)"; dns.query; dotprefix; content:".ustaxnumber.org"; nocase; endswith; reference:url,www.malwarebytes.com/blog/uncategorized/2024/03/tax-scammer-goes-after-small-business-owners-and-self-employed-people; classtype:trojan-activity; sid:2051753; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_03_20, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_20;)