alert http $HOME_NET any -> any any (msg:"ET MALWARE LiteLLM & Telnyx Supply Chain (TeamPCP) Exfiltration"; flow:established,to_server; http.header; content:"X-Filename|3a 20|tpcp.tar.gz|0d 0a|"; fast_pattern; http.content_type; content:"application/octet-stream"; http.method; content:"POST"; reference:url,www.trendmicro.com/en_us/research/26/c/teampcp-telnyx-attack-marks-a-shift-in-tactics.html; classtype:trojan-activity; sid:2068902; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_04_22, deployment Perimeter, confidence High, signature_severity Major, updated_at 2026_04_22;)