alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Reborn Stealer 2021 Exfil attempt via Telegram"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/sendDocument?chat_id="; content:"|26|caption|3d|"; content:"|f0 9f 8f b4 20|IP|3a 20|"; distance:0; content:"|20|BASIC|20|INFORMATION|3a 0a 20 20 20 e2 88 9f 20|Passwords|20 2d 20|"; distance:0; fast_pattern; reference:md5,f925449e1f939ca70b5f842d4fc55921; reference:url,github.com/alikaptanoglu/Reborn-Stealer-2021-SOURCE/; classtype:command-and-control; sid:2033209; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_06_30, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_06_30;)