Rule History

alert http any any -> $HOME_NET any (msg:"ET INFO Server Responding to Microsoft Office HTTP Request for .html with JavaScript"; flow:established,to_client; flowbits:isset,ET.MSFT.GET.HTML; http.stat_code; content:"200"; http.response_body; content:"application/javascript"; fast_pattern; classtype:misc-activity; sid:2054243; rev:1; metadata:attack_target Client_Endpoint, created_at 2024_07_03, deployment Perimeter, deployment Internal, performance_impact Significant, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_07_03, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1221, mitre_technique_name Template_Injection; target:dest_ip;)