alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET ADWARE_PUP UPX encrypted file download possible malware"; flow:established,to_client; file.data; content:"MZ"; startswith; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; content:"|00|code|00|"; fast_pattern; content:"|00 C0|text|00|"; classtype:pup-activity; sid:2001047; rev:16; metadata:created_at 2010_07_30, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_11;)