alert tcp $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE DarkComet-RAT init connection"; flow:from_server,established; dsize:12; content:"|38 45 41 34 41 42 30 35 46 41 37 45|"; flowbits:set,ET.DarkCometJoin; reference:url,www.darkcomet-rat.com; reference:url,anubis.iseclab.org/?action=result&task_id=1a7326f61fef1ecb4ed4fbf3de3f3b8cb&format=txt; classtype:trojan-activity; sid:2013283; rev:4; metadata:created_at 2011_07_18, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)