alert http $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE HTTPTool User-Agent"; flow:established,to_server; http.user_agent; content:"HTTPTool/"; startswith; reference:md5,6526946c39fd53dd813a8a206446e491; classtype:trojan-activity; sid:2029637; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_03_16, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_08;)