alert tcp $EXTERNAL_NET 1024: -> $HOME_NET any (msg:"ET MALWARE TA457 Backdoor CnC Response"; flow:established,to_client; content:"200000|7c|YXV0bw|3d 3d|"; startswith; fast_pattern; dsize:15; reference:url,twitter.com/RedDrip7/status/1537389704374431744; reference:md5,29b6b195cf0671901b75b7d2ac6814f6; classtype:command-and-control; sid:2037017; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_06_16, deployment Perimeter, malware_family TA457, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_08_29;)