alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspicious HTTP Referer C Drive Path"; flow:established,to_server; http.referer; content:"res|3a 2f 2f|c|3a 5c|"; startswith; nocase; reference:md5,8ef81f2555725f7eeae00b3e31229e0e; classtype:trojan-activity; sid:2014302; rev:7; metadata:created_at 2012_03_05, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_13;)