alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE - Trojan.Proxy.PPAgent.t (updateb)"; flow:established,to_server; http.uri; content:"/updateb.php?p="; nocase; pcre:"/updateb\.php\?p=\d/i"; flowbits:isset,BT.ppagent.updatea; flowbits:unset,BT.ppagent.updatea; reference:url,original.avira.com/en/threats/vdf_history.html?id_vdf=2738; classtype:trojan-activity; sid:2003116; rev:8; metadata:created_at 2010_07_30, signature_severity Major, updated_at 2022_04_18;)