ET MALWARE Win32/a310Logger Variant Data Exfil via SMTP

Query · suricata

flow:established,to_server;
content:"Subject|3a 20|Files.zip|3a 3a 3a|"; fast_pattern;
content:"filename=|22|Files.zip|22 0d 0a 0d 0a|UEs"; distance:0;
Raw source ET MALWARE Win32/a310Logger Variant Data Exfil via SMTP · 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 any (
    msg:"ET MALWARE Win32/a310Logger Variant Data Exfil via SMTP";
    flow:established,to_server;
    content:"Subject|3a 20|Files.zip|3a 3a 3a|"; fast_pattern;
    content:"filename=|22|Files.zip|22 0d 0a 0d 0a|UEs"; distance:0;
    reference:md5,1f0296b2c958c1208c7fcaff5ce65a15;
    classtype:trojan-activity;
    sid:2037207; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_06_29, deployment Perimeter, malware_family a310Logger, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_29;
)

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