alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Stealerium Stealer Checkin via Discord"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/webhooks/"; startswith; http.host; content:"discord.com"; http.request_body; content:"username=Stealerium"; startswith; content:"&content=%60%60%60%0a%f0%9f%98%b9+*Stealerium+-+Report%3a"; distance:0; fast_pattern; reference:md5,53b457a56e207d1f8aa761857acfdb9b; reference:url,twitter.com/petrovic082/status/1550007840005361664; classtype:trojan-activity; sid:2037800; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_21, deployment Perimeter, malware_family Stealerium, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_21;)