Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Mimikatz x64 Executable Download Over HTTP"; flow:established,to_client; flowbits:isset,ET.http.binary; content:"|33 ff|"; content:"|89 37|"; distance:1; within:2; content:"|8b f3 45 85|"; distance:1; within:4; content:"|74|"; distance:1; within:1; content:"|4c 8b df 49|"; content:"|c1 e3 04 48|"; within:7; content:"|8b cb 4c 03|"; within:7; content:"|d8|"; within:4; reference:url,github.com/gentilkiwi/mimikatz; classtype:trojan-activity; sid:2029335; rev:2; 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_04_28;)