alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE CryptBot Data Exfiltration Attempt"; flow:established,to_server; http.method; content:"POST"; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name|3d 22|file|22 3b 20|filename|3d 22|Kecavase.bin|22|"; fast_pattern; reference:url,www.intrinsec.com/wp-content/uploads/2024/12/TLP-CLEAR-CryptBot-Hunting-for-intial-access-vectors.pdf; reference:md5,e52da29ca9214e322ba939105a9d6bb8; classtype:trojan-activity; sid:2059019; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, affected_product Windows_8, affected_product Windows_10, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_01_07, deployment Perimeter, malware_family Cryptbot, performance_impact Low, confidence High, signature_severity Major, updated_at 2025_01_07, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)