alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Luca Stealer Sending System Information via Telegram (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/bot"; startswith; content:"/sendDocument?chat_id="; distance:0; content:"&caption|3d 0a 2d 20|IP|20|Info|20 2d 0a 0a|IP|3a 20|"; distance:0; fast_pattern; content:"|0a 2d 20|PC|20|Info|20 2d 0a|"; distance:0; content:"|0a|GPU|3a 20 0a|"; distance:0; content:"|0a|FileLocation|3a 20|"; distance:0; http.host; content:"api.telegram.org"; bsize:16; reference:url,twitter.com/suyog41/status/1631189160093425664; reference:md5,49d57061203091edfdeee7ec378811ea; classtype:trojan-activity; sid:2044524; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_03_08, deployment Perimeter, deployment SSLDecrypt, malware_family LucaStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_21, reviewed_at 2023_11_28; target:src_ip;)