Versions (3)
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Rev: 2 • Nov 16, 2020, 12:00 PMET MALWARE APT Lazarus Nukesped Downloader
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE APT Lazarus Nukesped Downloader"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".asp"; endswith; http.header; content:"Accept-Language|3a 20|ko-KR|3b|q="; http.request_body; content:"fn="; depth:3; nocase; content:".gif&code="; nocase; distance:0; fast_pattern; pcre:"/^fn=[^&]*\.gif&code=\d+$/i"; reference:url,www.welivesecurity.com/2020/11/16/lazarus-supply-chain-attack-south-korea/; classtype:command-and-control; sid:2031207; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_16, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_16;)
Nov 16, 2020, 12:00 PM
Nov 16, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-malware.rules