alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE RedditC2 Related Activity M2 (POST)"; flow:established,to_server; http.method; content:"POST"; http.user_agent; bsize:115; content:"Mozilla/5.0|20 28|Windows|20|NT|20|10.0|3b 20|Win64|3b 20|x64|29 20|AppleWebKit/537.36|20 28|KHTML|2c 20|like|20|Gecko|29 20|Chrome/74.0.3729.169|20|Safari/537.36"; fast_pattern; http.request_body; content:"text=out"; startswith; http.header_names; to_lowercase; content:!"|0d 0a|referer|0d 0a|"; reference:url,github.com/kleiton0x00/RedditC2/; classtype:trojan-activity; sid:2042942; rev:3; metadata:attack_target Client_Endpoint, created_at 2022_12_15, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_30; target:src_ip;)