alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED BotLoader Retrieving Additional Payloads"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/api/support"; startswith; content:"|3f|file|3d|m_"; distance:0; fast_pattern; content:".dll"; endswith; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; reference:md5,4fd927530935327e0405ea5ddabc18ef; classtype:trojan-activity; sid:2045781; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_05_19, deployment Perimeter, former_category MALWARE, malware_family BotLoader, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_10_01, reviewed_at 2024_10_01; target:src_ip;)