ET MALWARE MetaStealer Activity (Response)

Query · suricata

flow:established,to_client;
content:"tempuri.org|2f|";
content:"|2f|MSValue"; within:20;
content:"|7c 2a 2e 74 78 74 2c 2a 2e 64 6f 63 2a 2c 2a 2e 72 64 70|"; fast_pattern; distance:0;
target:dest_ip;
Raw source ET MALWARE MetaStealer Activity (Response) · 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 $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE MetaStealer Activity (Response)";
    flow:established,to_client;
    content:"tempuri.org|2f|";
    content:"|2f|MSValue"; within:20;
    content:"|7c 2a 2e 74 78 74 2c 2a 2e 64 6f 63 2a 2c 2a 2e 72 64 70|"; fast_pattern; distance:0;
    reference:md5,61a59a93261b2014dc310da23d1b99e1;
    reference:md5,cacc36c274c33415c479947893cb4631;
    classtype:trojan-activity;
    sid:2049282; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_11_22, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_11_22;
    target:dest_ip;
)

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