alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [ANY.RUN] Hydrochasma Fast Reverse Proxy M2"; flow:established,to_server; content:"|10 61 62 16 03 01 00 ee 01 00 00 ea 03 03|"; depth:14; reference:md5,8d4f9c64ba15f7cabd81936d1c8c83d4; reference:url,app.any.run/tasks/128bd923-3347-4a7f-8261-9a4c7cb29ea8; reference:url,community.emergingthreats.net/t/hydrochasma-fast-reverse-proxy/727/3; classtype:command-and-control; sid:2046751; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_07, deployment Perimeter, malware_family hydrochasma, confidence Medium, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_07_10, reviewed_at 2024_01_26;)