alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Asprox.ClickFraudBot CnC Beacon"; flow:established,to_server; urilen:31; http.uri; content:"/b/eve/"; depth:7; fast_pattern; pcre:"/^[a-f0-9]{24}$/Ri"; reference:url,research.zscaler.com/2014/02/new-zbot-variant-goes-above-and-beyond.html; reference:url,techhelplist.com/index.php/tech-tutorials/41-misc/465-asprox-botnet-advertising-fraud-general-overview-1; reference:md5,df5ab239bdf09a8716cabbdfa1d6a724; classtype:command-and-control; sid:2018096; rev:4; metadata:attack_target Client_Endpoint, created_at 2014_02_10, deployment Perimeter, signature_severity Major, tag c2, updated_at 2020_08_18, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)