alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED Eternity Stealer Data Exfiltration Activity"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/stealer/"; startswith; fast_pattern; content:"pwds="; content:"cards="; content:"wlts="; content:"files="; content:"user="; content:"comp="; content:"ip="; content:"country="; content:"city="; content:"tag="; content:"domains="; content:"ad="; http.host; content:".onion"; endswith; http.header_names; content:"|0d 0a|Host|0d 0a|Content-Length|0d 0a|Expect|0d 0a|Proxy-Connection|0d 0a 0d 0a|"; bsize:52; http.request_body; content:"PK|03 04|"; byte_test:1,<=,20,0,relative; content:"Information.txt"; distance:0; reference:md5,c4b46a2d0898e9ba438366f878cd74bd; classtype:trojan-activity; sid:2036542; rev:4; metadata:attack_target Client_Endpoint, created_at 2022_05_06, deployment Perimeter, former_category MALWARE, malware_family Eternity_Stealer, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_12, reviewed_at 2024_09_12;)