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SID: 2052280 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1Apr 29, 2024, 12:00 PM

ET MALWARE Win32/Neshta Variant Related Activity (POST)

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Neshta Variant Related Activity (POST)"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/mytest"; bsize:11; http.user_agent; content:"NZT|20|1.0"; bsize:7; fast_pattern; http.request_body; base64_decode:bytes 20, offset 0; base64_data; content:"|7b 22|username|22 3a 22|"; reference:md5,6767f8292814a48db7fa79e8572a324f; classtype:trojan-activity; sid:2052280; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2024_04_29, deployment Perimeter, malware_family Win32_Neshta, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29; target:src_ip;)

Apr 29, 2024, 12:00 PM

Apr 29, 2024, 12:00 PM

Apr 29, 2024, 10:00 PM

Aug 12, 2025, 9:34 PM

rules/emerging-malware.rules