ET MALWARE Win32/Detplock Checkin via SMTP

Query · suricata

flow:established,to_server;
content:"Subject|3a 20|Virus Infection Monitor|0d 0a|"; fast_pattern;
content:"Content|2d|type|3a 20|multipart|2f|mixed|3b 20|boundary|3d 22 23|BOUNDARY|23 22 0d 0a|";
Raw source ET MALWARE Win32/Detplock Checkin via SMTP · Suricata
Esc
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/Detplock Checkin via SMTP";
    flow:established,to_server;
    content:"Subject|3a 20|Virus Infection Monitor|0d 0a|"; fast_pattern;
    content:"Content|2d|type|3a 20|multipart|2f|mixed|3b 20|boundary|3d 22 23|BOUNDARY|23 22 0d 0a|";
    reference:md5,6ac14ccd294d75e340d48d19aa74be09;
    classtype:trojan-activity;
    sid:2031608; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_02_08, deployment Perimeter, malware_family Win32_Detplock, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_08;
)

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