alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Sundown EK Secondary Landing Apr 20 2015"; flow:established,from_server; file_data; content:"2147023083"; content:"BlackList"; nocase; content:"lenBadFiles"; nocase; fast_pattern; content:"ProgFilePath"; nocase; content:"lenProgFiles"; nocase; classtype:exploit-kit; sid:2020985; rev:3; metadata:created_at 2015_04_24, confidence High, signature_severity Major, updated_at 2019_10_08;)