alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Korklic.A"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"mode=boot&MyValue="; fast_pattern; content:"&code="; pcre:"/MyValue=[a-f0-9]{2}\:[a-f0-9]{2}\:[a-f0-9]{2}\:[a-f0-9]{2}\:/i"; classtype:trojan-activity; sid:2009003; rev:8; metadata:created_at 2010_07_30, malware_family Win32_Korklic_A, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_16;)