alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Arkei Stealer Config Download Request"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/grubConfig"; http.user_agent; content:"Arkei/"; depth:6; fast_pattern; reference:md5,1f075616f69983f5b3fc7ba068032c6d; classtype:trojan-activity; sid:2025430; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_03_13, deployment Perimeter, malware_family Arkei, confidence High, signature_severity Major, tag Stealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_19;)