Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Sn0wsLogger CnC Exfil M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:!"."; http.user_agent; content:"RestSharp/"; startswith; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|token|22 0d 0a|"; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|"; content:"-payment.txt|22 0d 0a|"; within:40; fast_pattern; http.header_names; content:!"|0d 0a|Referer|0d 0a|"; reference:md5,644038dbb036d00f45969afb7992e762; classtype:trojan-activity; sid:2031583; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_01_28, deployment Perimeter, malware_family Sn0wsLogger, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_12;)