alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Transparent Tribe APT Related Backdoor Sending System Information"; flow:established,to_server; content:"|0c 00 00 00 00|in"; startswith; fast_pattern; content:"fo="; distance:2; within:3; content:"|7c|"; within:20; content:"|7c 7c|"; within:20; reference:url,twitter.com/RedDrip7/status/1533659387277221888; reference:md5,70635541c80cd5a237ff789abcce4e27; reference:md5,30bc987b05c707e89f1a0b06e022459e; reference:md5,ac4944bec64b6d40f3bb16d6ed3f06e8; classtype:trojan-activity; sid:2036869; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_06_06, deployment Perimeter, malware_family TransparentTribe, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_06;)