ET MALWARE Unknown Maldoc CnC Activity (2022-07-25)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/bin/KommDatenGEG.pl?user="; startswith; fast_pattern;
content:"&rechner="; distance:0;
content:"&rnd="; distance:0;
http.header_names;
content:"UA-CPU";
Raw source ET MALWARE Unknown Maldoc CnC Activity (2022-07-25) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Unknown Maldoc CnC Activity (2022-07-25)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/bin/KommDatenGEG.pl?user="; startswith; fast_pattern;
    content:"&rechner="; distance:0;
    content:"&rnd="; distance:0;
    http.header_names;
    content:"UA-CPU";
    reference:md5,2cdae46b94ef33d20a8ace6d4d8cae56;
    classtype:command-and-control;
    sid:2037821; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_07_25, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_25, reviewed_at 2025_01_06;
)

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