alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Havoc Framework CnC Request"; flow:established,to_server; http.method; content:"POST"; http.header_names; content:"X-Havoc|0d 0a|"; content:"X-Havoc-Agent|0d 0a|"; fast_pattern; reference:url,github.com/HavocFramework/Havoc/blob/main/Teamserver/profiles/havoc.yaotl; classtype:trojan-activity; sid:2039073; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_09_30, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_09_30, reviewed_at 2025_10_24;)