alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32.Bicololo Response 2"; flow:established,to_client; flowbits:isset,ET.Bicololo.Request; http.cookie; content:"ci_session="; fast_pattern; file.data; content:"ok"; depth:2; endswith; reference:md5,691bd07048b09c73f0a979529a66f6e3; classtype:trojan-activity; sid:2016948; rev:5; metadata:created_at 2013_05_31, signature_severity Major, updated_at 2020_09_17;)