ET MALWARE Win32.Agent.kawe SMTP Stealer

Query · suricata

flow:established,to_server;
content:"Content-Type|3a 20|multipart/mixed|3b 0d 0a 09|boundary=|22 2d 2d 2d 2d 3d|_NextPart_000_0000_";
content:"Content-Type|3a 20|text/plain|0d 0a|Content-Transfer-Encoding|3a 20|7bit";
content:"Content-Disposition|3a 20|attachment|3b 0d 0a 09|filename|3d 22|alkunpass|22|"; fast_pattern;
Raw source ET MALWARE Win32.Agent.kawe SMTP Stealer · Suricata
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Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert smtp $HOME_NET any -> $EXTERNAL_NET [25,587,2525] (
    msg:"ET MALWARE Win32.Agent.kawe SMTP Stealer";
    flow:established,to_server;
    content:"Content-Type|3a 20|multipart/mixed|3b 0d 0a 09|boundary=|22 2d 2d 2d 2d 3d|_NextPart_000_0000_";
    content:"Content-Type|3a 20|text/plain|0d 0a|Content-Transfer-Encoding|3a 20|7bit";
    content:"Content-Disposition|3a 20|attachment|3b 0d 0a 09|filename|3d 22|alkunpass|22|"; fast_pattern;
    reference:md5,cb94fede5345784c5ace43c01419aace;
    classtype:trojan-activity;
    sid:2036963; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_06_10, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_10;
)

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