alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Poweliks Clickfraud CnC M2"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?q="; http.header; content:"redirect|3a|"; fast_pattern; content:"version|3a 20|"; content:"aid|3a 20|"; content:"builddate|3a 20|"; content:"pid|3a 20|"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,www.symantec.com/content/en/us/enterprise/media/security_response/whitepapers/evolution-of-poweliks.pdf; reference:md5,e13234077f513208238203108df30ff4; classtype:command-and-control; sid:2021227; rev:6; metadata:created_at 2015_06_10, signature_severity Major, updated_at 2024_04_28;)