alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Malicious Doc Downloading EXE"; flow:established,from_server; flowbits:isset,ET.MalDocEXEPrimer; file_data; content:"MZ"; within:2; byte_jump:4,58,relative,little; content:"PE|00 00|"; distance:-64; within:4; reference:url,fireeye.com/blog/threat-research/2015/04/a_new_word_document.html; classtype:trojan-activity; sid:2020838; rev:3; metadata:created_at 2015_04_03, signature_severity Major, updated_at 2019_07_26;)