ET MALWARE TransparentTribe Related CnC Activity

Query · suricata

flow:established,to_server;
content:"x999"; startswith; fast_pattern;
content:">"; distance:0;
pcre:"/>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}>/";
content:"|20|>>";
Raw source ET MALWARE TransparentTribe Related CnC Activity · 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 any (
    msg:"ET MALWARE TransparentTribe Related CnC Activity";
    flow:established,to_server;
    content:"x999"; startswith; fast_pattern;
    content:">"; distance:0;
    pcre:"/>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}>/";
    content:"|20|>>";
    reference:md5,ae20da9a88c7624a6b3f81a20bc8065c;
    reference:url,twitter.com/s1ckb017/status/1435888576710029315;
    reference:url,blog.cyble.com/2021/09/14/apt-group-targets-indian-defense-officials-through-enhanced-ttps/;
    classtype:trojan-activity;
    sid:2033962; rev:1;
    metadata:created_at 2021_09_16, malware_family TransparentTribe, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_09_16;
)

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