Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE HTTP POST with Suspicious User-Agent Observed - Possible ZLoader Activity M1"; flow:established,to_server; http.method; content:"POST"; http.user_agent; content:"Security Metrics"; fast_pattern; reference:url,www.zscaler.com/blogs/security-research/zloader-no-longer-silent-night; classtype:trojan-activity; sid:2050647; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, created_at 2024_01_31, deployment Perimeter, deployment SSLDecrypt, malware_family Zloader, performance_impact Low, confidence Low, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_01_31; target:src_ip;)