alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/FakeXPA Checkin URL"; flow:established,to_server; http.uri; content:"/firstrun.php?product="; nocase; fast_pattern; content:"&aff="; nocase; distance:0; content:"&update="; nocase; distance:0; http.user_agent; content:"Mozilla"; bsize:7; classtype:command-and-control; sid:2008152; rev:8; metadata:created_at 2010_07_30, malware_family Win32_FakeXPA, signature_severity Major, updated_at 2020_09_15;)