alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Hact .be Pentesting CnC Activity"; flow:established,to_server; http.method; content:"HEAD"; http.user_agent; content:"Microsoft|20|BITS|2f|7|2e|8"; bsize:18; http.host; content:"hact.be"; endswith; fast_pattern; reference:md5,d0ae5e30bb9dbc4563cb95c34b47112e; classtype:trojan-activity; sid:2044528; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_08, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_09;)