Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/MuggleStealer CnC Desktop Exfil (POST)"; flow:established,to_server; urilen:23; http.method; content:"POST"; http.uri; content:"/upload/"; startswith; pcre:"/^(?:[a-zA-Z0-9]{7})\//R"; content:"Desktop"; endswith; fast_pattern; http.header_names; content:!"Referer"; http.host; pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/"; reference:md5,88a89eb441c0ea0e4e128fd70b244f9d; reference:md5,c8ed60d1f24a7119612cd5bde0ddc1e1; reference:url,twitter.com/suyog41/status/1638865731550085120; classtype:trojan-activity; sid:2044753; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_03_23, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_MuggleStealer, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_23;)