alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE TA410 APT FlowCloud Dependency Download M4"; flow:established,to_server; urilen:19; http.method; content:"GET"; http.uri; content:"/WC413/67B1B02F.DAT"; nocase; fast_pattern; classtype:trojan-activity; sid:2036387; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_05, deployment Perimeter, malware_family TA410, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_05;)