Rule History

alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE LUMAR Stealer Exfiltration M2"; flow:established,to_server; content:"|00 00 40|"; content:"|00 00 00 00 00 00 00 24|"; pcre:"/^(?:[0-9a-z]{8}\x2d[0-9a-z]{4}\x2d[0-9a-z]{4}\x2d[0-9a-z]{4}\x2d[0-9a-z]{12})/R"; content:"|00 43 00 3a 00 5c 00|"; content:"|00 2e 00 65 00 78 00 65 00 50 4b 03 04|"; fast_pattern; reference:url,twitter.com/naumovax/status/1716452167538577741; classtype:trojan-activity; sid:2048736; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_10_23, deployment Perimeter, malware_family LUMAR, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_23;)