alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/CollectorStealer CnC Exfil M2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"Content-Disposition|3a 20|form-data|3b 20|name=|22|file|22 3b 20|filename=|22|[dw0rd]_"; fast_pattern; content:"Information.txt"; distance:0; http.header_names; content:!"Referer"; content:!"User-Agent"; reference:md5,51e8f4abbb4ba18a39e302edad171b71; classtype:trojan-activity; sid:2032805; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_23, deployment Perimeter, malware_family CollectorStealer, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_23;)