alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE P2P Zeus or ZeroAccess Request To CnC"; flow:established,to_server; dsize:20; content:"|E5 AA C0 31|"; depth:4; content:"|5B 74 08 4D 9B 39 C1|"; distance:5; within:7; reference:url,www.abuse.ch/?p=3499; reference:url,www.kindsight.net/sites/default/files/Kindsight_Malware_Analysis-ZeroAcess-Botnet-final.pdf; classtype:command-and-control; sid:2013911; rev:9; metadata:created_at 2011_11_11, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)