alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Korklic.A"; flow:to_server,established; content:"GET"; nocase; http_method; content:"mode=boot&MyValue="; http_uri; content:"&code="; http_uri; pcre:"/MyValue=[a-f0-9]{2}\:[a-f0-9]{2}\:[a-f0-9]{2}\:[a-f0-9]{2}\:/Ui"; classtype:trojan-activity; sid:2009003; rev:7; metadata:created_at 2010_07_30, malware_family Win32_Korklic_A, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)