ET MALWARE DDoS.Win32.Agent.bay Variant Covert Channel (VERSONEX)

Query · suricata

flow:established,to_server;
content:"VERSONEX|3a|"; depth:9; fast_pattern;
byte_test:1,>=,0x30,0,relative;
byte_test:1,<=,0x39,0,relative;
content:"|7c|"; distance:1; within:1;
Raw source ET MALWARE DDoS.Win32.Agent.bay Variant Covert Channel (VERSONEX) · 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 DDoS.Win32.Agent.bay Variant Covert Channel (VERSONEX)";
    flow:established,to_server;
    content:"VERSONEX|3a|"; depth:9; fast_pattern;
    byte_test:1,>=,0x30,0,relative;
    byte_test:1,<=,0x39,0,relative;
    content:"|7c|"; distance:1; within:1;
    reference:md5,f80af2735fdad5fe14defc4f1df1cc30;
    classtype:trojan-activity;
    sid:2020978; rev:2;
    metadata:created_at 2015_04_23, signature_severity Major, updated_at 2019_07_26;
)

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