alert udp $EXTERNAL_NET any -> $HOME_NET 31337 (msg:"GPL MALWARE BackOrifice access"; content:"|CE|c|D1 D2 16 E7 13 CF|9|A5 A5 86|"; reference:arachnids,399; classtype:misc-activity; sid:2100116; rev:7; metadata:created_at 2010_09_23, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_08_16;)