alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lazarus Related Maldoc Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/details.php?image="; fast_pattern; content:".PRJ"; endswith; http.user_agent; content:"|3b 20|ms-office|3b 20|"; http.header_names; content:!"Referer"; reference:url,twitter.com/ShadowChasing1/status/1455489336850325519; reference:md5,606695bae4f0eb5ba0f35b8897b9f57a; classtype:trojan-activity; sid:2034342; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_11_04, deployment Perimeter, deployment SSLDecrypt, malware_family Lazarus, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_04, reviewed_at 2023_08_22;)