Versions (4)
Version DetailsCurrent
Rev: 3 • Mar 2, 2021, 12:00 PMET HUNTING Observed Interesting Content-Type Inbound (application/x-sh)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET HUNTING Observed Interesting Content-Type Inbound (application/x-sh)"; flow:established,to_client; http.header; content:"Content-Type|3a 20|application/x-sh"; fast_pattern; pcre:"/^(?:\x3b|\r\n)/R"; reference:url,developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Common_types; classtype:policy-violation; sid:2031747; rev:3; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2021_03_02, deployment Perimeter, performance_impact Significant, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_15;)
Mar 2, 2021, 12:00 PM
Apr 15, 2024, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-hunting.rules