Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Golang Easy Stealer Activiy (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/apache"; bsize:7; fast_pattern; http.user_agent; content:"Go-http-client/"; nocase; startswith; http.request_body; pcre:"/^[0-9a-f]{32}\x3d\x26/"; content:"|25 35 42|BUILD_ID|25 35 44|"; http.header_names; content:!"Referer"; reference:url,www.bridewell.com/insights/blogs/detail/uncovering-the-easy-stealer-infostealer; reference:md5,417cfabeee01bee425e071a9d8828170; reference:md5,751f30fc1993b036c41fd04da011f3f9; classtype:trojan-activity; sid:2048896; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_10_25, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_10_25, reviewed_at 2023_10_25; target:src_ip;)