alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Andariel/TA430 Related TigerRAT Client Checkin"; flow:established,to_server; flowbits:set,ET.tigerrat; dsize:33; content:"dd7b696b96434d2bf07b34f9c125d51d|00|"; fast_pattern; reference:url,asec.ahnlab.com/en/59073/; reference:md5,13b4ce1fc26d400d34ede460a8530d93; classtype:trojan-activity; sid:2051622; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_12, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12; target:src_ip;)