alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Kimsuky Related Host Data Exfil"; flow:established,to_server; http.uri.raw; content:"&p1="; http.request_line; content:"GET|20|///?m="; fast_pattern; http.user_agent; content:"Mozilla/5|2e|0|20|(Windows|20|NT|20|6|2e|1|3b||20|Trident/7|2e|0|3b 20|rv|3a|11|2e|0)|20|like|20|Gecko"; reference:url,blog.yoroi.company/research/the-north-korean-kimsuky-apt-keeps-threatening-south-korea-evolving-its-ttps/; classtype:trojan-activity; sid:2029586; rev:2; metadata:attack_target Client_Endpoint, created_at 2020_03_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_03_06;)