alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Parrot TDS NDSW Check M2"; flow:established,to_client; content:"|3b|if|28|typeof|20|ndsw|3d 3d 3d 22|undefined|22 29 7b 28|function|28|"; fast_pattern; content:"var|20|ndsw|3d|true|2c|HttpClient|3d|function|28 29 7b|var|20|"; distance:0; content:"|3d|new|20|XMLHttpRequest|3b|"; distance:0; threshold:type limit, track by_src, seconds 60, count 1; reference:url,decoded.avast.io/janrubin/parrot-tds-takes-over-web-servers-and-threatens-millions; classtype:trojan-activity; sid:2052278; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_04_26, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Minor, tag Exploit_Kit, tag TDS, tag Parrot_TDS, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_26, reviewed_at 2025_01_22;)