alert tcp $HOME_NET any -> $EXTERNAL_NET 3128 (msg:"ET DELETED Likely Hupigon Post to Controller"; flow:established,to_server; content:"POST /+"; depth:7; flowbits:noalert; flowbits:set,ET.Hupinit1; reference:url,www.f-secure.com/v-descs/backdoor_w32_hupigon.shtml; classtype:trojan-activity; sid:2008389; rev:2; metadata:created_at 2010_07_30, signature_severity Unknown, updated_at 2019_07_26;)