alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE x0Proto File Info Request"; flow:established,to_client; dsize:8; content:"REQF|0c|1|0c|1"; depth:8; reference:md5,3d5a4b51ff4ad8534873e02720aeff34; classtype:trojan-activity; sid:2024424; rev:2; metadata:created_at 2017_06_23, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_07;)