alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Lazarus Maldoc CnC"; flow:established,to_server; http.method; content:"HEAD"; http.uri; content:"/shop_testbr/localization/dir_photoes/"; startswith; fast_pattern; content:".php?"; distance:0; http.user_agent; content:"Office"; http.host; content:"www.dronerc.it"; reference:url,twitter.com/h2jazi/status/1370024802791096320; reference:md5,6c7fb32d476b7a367df0403b6a8c950f; reference:md5,31d748392f447001ba275361fbe65695; classtype:command-and-control; sid:2031951; rev:1; metadata:created_at 2021_03_11, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_03_11;)