ET MALWARE HTTPCore CnC Task Request

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.uri;
content:"/req_";
content:".txt"; distance:32; within:4; endswith;
http.user_agent; bsize:115;
content:"Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36";
Raw source ET MALWARE HTTPCore CnC Task Request · 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 HTTPCore CnC Task Request";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.uri;
    content:"/req_";
    content:".txt"; distance:32; within:4; endswith;
    http.user_agent; bsize:115;
    content:"Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36";
    reference:url,www.cyber.gov.au/sites/default/files/2020-06/ACSC-Advisory-2020-008-Copy-Paste-Compromises.pdf;
    classtype:command-and-control;
    sid:2030363; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_19, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_06_19;
)

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