alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lazarus APT Related Activity (GET)"; flow:established,to_server; http.request_line; content:"GET /marrketend.png"; fast_pattern; http.user_agent; bsize:114; content:"Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4044.74 Safari/537.36"; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:md5,0dab8ad32f7ed4703b9217837c91cca7; reference:url,twitter.com/h2jazi/status/1555205042331947011; classtype:trojan-activity; sid:2037957; rev:4; metadata:attack_target Client_Endpoint, created_at 2022_08_08, deployment Perimeter, deployment SSLDecrypt, malware_family Lazarus, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_05_04;)