alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Karagany checkin (sid5 2)"; flow:established,to_server; http.uri; content:"?mode="; content:"&f="; content:"&sid5="; fast_pattern; http.header_names; to_lowercase; content:!"|0d 0a|accept|0d 0a|"; classtype:command-and-control; sid:2015534; rev:6; metadata:created_at 2012_07_27, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_27;)