alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Kuluoz/Asprox CnC Response"; flow:established,to_client; flowbits:isset,ET.Kuluoz; file.data; content:"|80 00 00 00|"; startswith; reference:md5,a3e0f51356d48124fba25485d1871b28; reference:url,www.trendmicro.com/cloud-content/us/pdfs/security-intelligence/white-papers/wp-asprox-reborn.pdf; reference:url,blog.fortinet.com/post/changes-in-the-asprox-botnet; classtype:command-and-control; sid:2019187; rev:7; metadata:created_at 2014_09_17, signature_severity Major, updated_at 2024_04_07;)