ET MALWARE Possible IceRat CnC Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/dow_"; startswith; fast_pattern;
content:".txt"; endswith;
http.user_agent;
content:"Java/"; startswith;
Raw source ET MALWARE Possible IceRat CnC Activity · 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 Possible IceRat CnC Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/dow_"; startswith; fast_pattern;
    content:".txt"; endswith;
    http.user_agent;
    content:"Java/"; startswith;
    reference:url,www.gdatasoftware.com/blog/icerat-evades-antivirus-by-using-jphp;
    classtype:trojan-activity;
    sid:2031485; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_01_06, deployment Perimeter, malware_family IceRAT, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_09;
)

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