alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Kryptik.BSYO Checkin"; flow:to_server,established; http.uri; content:"/log?"; content:"|7c|aid="; fast_pattern; content:"|7c|version="; content:"|7c|id="; content:"|7c|os="; pcre:"/\/log\?(start|install)\x7caid=/"; reference:md5,494d0fb7efaabaf9c69edbc58360671f; reference:md5,1fd3e714669ac8a3bc4af33a3e6cf21f; reference:url,www.virusradar.com/en/Win32_Kryptik.BSYO/description; classtype:command-and-control; sid:2018205; rev:5; metadata:created_at 2014_03_04, malware_family Win32_Kryptik_BSYO, signature_severity Major, updated_at 2020_09_23;)