alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE StormKitty Data Exfil via Telegram"; flow:established,to_server; http.host; bsize:16; content:"api.telegram.org"; http.uri; content:"/sendMessage?chat_id="; content:"text=|0a|"; content:"|20 f0 9f|"; distance:0; content:"*|0a|Date|3a 20|"; distance:0; content:"|0a|System|3a 20|"; content:"|20|Bit)|0a|Username|3a 20|"; reference:md5,00171267979ca2e972336e751a5725b7; reference:url,github.com/LimerBoy/StormKitty; classtype:command-and-control; sid:2031009; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_10_13, deployment Perimeter, deployment SSLDecrypt, malware_family StormKitty, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_13;)