Rule History

alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE APT/Bitter Related CnC Activity"; flow:established,to_server; stream_size:server,<,5; content:"|db f6 94 f6 9f f6 82 f6 f6 f6|"; fast_pattern; content:"|f6 cc f6|"; distance:3; within:3; content:"|f6 cc f6|"; distance:3; within:3; content:"|f6 cc f6|"; distance:3; within:3; content:"|f6 cc f6|"; distance:3; within:3; content:"|f6 cc f6|"; distance:3; within:3; content:"|f6 f6 f6|"; distance:3; within:3; endswith; reference:url,twitter.com/ShadowChasing1/status/1480853604609126403; reference:md5,1cdc2c0f6834b37da085c0deb9d3461a; classtype:targeted-activity; sid:2034909; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_01_13, deployment Perimeter, confidence High, signature_severity Major, tag RAT, updated_at 2022_01_13;)