alert http1 $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE [ANY.RUN] WhiteSnake Stealer HTTP POST Report Exfiltration"; flow:established,to_server; http.method; content:"POST"; http.header_names; content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Connection|0d 0a 0d 0a|"; startswith; http.request_body; content:"WSR$"; fast_pattern; startswith; reference:url,community.emergingthreats.net/t/whitesnake/1338/; reference:md5,5302fff6311dab7554eaf7902c2aaa61; reference:url,app.any.run/tasks/5dc1cfaa-5470-4708-92d8-b8703b47c1f7; classtype:trojan-activity; sid:2050602; rev:4; metadata:attack_target Client_Endpoint, created_at 2024_01_30, deployment Perimeter, malware_family WhiteSnake, confidence High, signature_severity Major, tag Stealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_14, reviewed_at 2024_10_14;)