alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Downloaded .bat Disables Windows Defender"; flow:established,to_client; http.content_type; content:"application/x-msdos-program"; file.data; content:"@echo off"; startswith; content:"reg|20|delete|20 22|HKLM|5c|Software|5c|Policies|5c|Microsoft|5c|Windows|20|Defender|22 20 2f|f"; distance:0; fast_pattern; classtype:trojan-activity; sid:2034338; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_03, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_09;)