alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Havoc Framework Header in HTTP Response"; flow:established,to_client; http.header_names; content:"X-Havoc|0d 0a|"; fast_pattern; reference:url,github.com/HavocFramework/Havoc/blob/main/Teamserver/profiles/havoc.yaotl; reference:url,twitter.com/MichalKoczwara/status/1652986620658761729; classtype:trojan-activity; sid:2045270; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_05_01, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_01;)