alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY CommandCam Download"; flow:established,to_client; file.data; content:"MZ"; within:2; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; content:"CommandCam "; fast_pattern; reference:url,github.com/tedburke/CommandCam; classtype:policy-violation; sid:2030474; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_07_06, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_07_06;)