ET MALWARE Suspected APT-Q-37 Related Activity (Outbound)

Query · suricata

flow:established,to_server;
dsize:<100;
content:"|2a 00|"; depth:12;
content:"|2a 00 57 00 69 00 6e 00 64 00 6f 00 77 00 73 00|"; distance:20; within:30; fast_pattern;
content:!"User-Agent";
content:!"Referer";
content:!"Host";
Raw source ET MALWARE Suspected APT-Q-37 Related Activity (Outbound) · 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 tcp $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE Suspected APT-Q-37 Related Activity (Outbound)";
    flow:established,to_server;
    dsize:<100;
    content:"|2a 00|"; depth:12;
    content:"|2a 00 57 00 69 00 6e 00 64 00 6f 00 77 00 73 00|"; distance:20; within:30; fast_pattern;
    content:!"User-Agent";
    content:!"Referer";
    content:!"Host";
    reference:url,mp.weixin.qq.com/s/8j_rHA7gdMxY1_X8alj8Zg;
    reference:md5,71e1cfb5e5a515cea2c3537b78325abf;
    classtype:trojan-activity;
    sid:2036945; rev:1;
    metadata:created_at 2022_06_09, malware_family APT_Q_37, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_06_09;
)

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