alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET POLICY Petite Packed Binary Download"; flow:established,to_client; flowbits:set,ET.http.binary; flowbits:isnotset,ET.http.binary; file.data; content:"MZ"; within:2; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; content:"|43 6F 6D 70 72 65 73 73 65 64 20 62 79 20 50 65 74 69 74 65 20 28 63 29 31 39 39 39 20 49 61 6E 20 4C 75 63 6B 2E 00 00|"; distance:-44; reference:md5,fa2c0e8b486c879f4baee1d5bebdf0a2; reference:url,un4seen.com/petite/; classtype:misc-activity; sid:2020973; rev:8; metadata:created_at 2015_04_22, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_08;)