alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Corebot Requesting Module"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php?"; http.user_agent; content:"Mozilla/5.0 (Windows NT 6.1|3b 20|rv|3a|15.0) Gecko/20100101 Firefox/15.0.1"; fast_pattern; startswith; http.content_type; content:"text/plain"; startswith; http.header_names; to_lowercase; content:!"|0d 0a|accept"; reference:url,securityintelligence.com/watch-out-for-corebot-new-stealer-in-the-wild/; reference:md5,f7dff17acec6b79f3cdad6259cfb2d2c; classtype:trojan-activity; sid:2021741; rev:4; metadata:created_at 2015_09_01, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_20;)