alert http $HOME_NET any -> $EXTERNAL_NET $HTTP_PORTS (msg:"ET MALWARE wisp backdoor detected reporting"; flow:established,to_server; http.uri; content:"getkys.kys"; fast_pattern; nocase; content:"hostname="; nocase; classtype:trojan-activity; sid:2011395; rev:4; metadata:created_at 2010_09_28, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_10;)