alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Zbot CnC POST /common/versions.php"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"/common/versions.php"; reference:md5,43d8afa89bd6bf06973af62220d6c158; classtype:command-and-control; sid:2014979; rev:3; metadata:created_at 2012_06_28, signature_severity Major, updated_at 2020_04_21;)