Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE NimPlant Sending Command (Inbound)"; flow:established,to_client; flowbits:isset,ET.nimplant; flowbits:unset,ET.nimplant; http.stat_code; content:"200"; file.data; content:"|7b 22|id|22 3a 22|"; pcre:"/^(?:[a-zA-Z]{8})\x22\x2c\x22k\x22\x3a\x22/R"; content:"|22 2c 22|k|22 3a 22|"; fast_pattern; reference:url,github.com/chvancooten/NimPlant; classtype:trojan-activity; sid:2044348; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_02_27, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_27; target:dest_ip;)