alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE DarkComet-RAT Client Keepalive"; flow:to_server,established; dsize:12; content:"|39 34 41 35 41 44 30 41 45 46 36 39|"; flowbits:isset,ET.DarkCometJoin; reference:url,www.darkcomet-rat.com; classtype:trojan-activity; sid:2013285; rev:3; metadata:created_at 2011_07_18, deprecation_reason Duplicate, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_27;)