alert http $EXTERNAL_NET any -> $HOME_NET any (
msg:"ET MALWARE Mimikatz x64 Mimidrv.sys Download Over HTTP";
flow:established,to_client;
file_data;
content:"MZ"; within:2;
content:"|88 01 00 00 3c 04 00 00 40 00 00 00|"; distance:0;
content:"|e8 02 00 00 f8 02 00 00 40 00 00 00|"; within:16;
reference:url,github.com/gentilkiwi/mimikatz;
classtype:trojan-activity;
sid:2029337; rev:3;
metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_01_29, deployment Perimeter, deployment Internal, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_08;
)