ET MALWARE PS1/ExfiltracaoBot CnC Checkin

Query · suricata

flow:established,to_server;
flowbits:set,ET.ExfiltracaoBot;
dsize:<200;
pcre:"/^(?:[0-9]{2})\x2f(?:[0-9]{2})\x2f(?:[0-9]{4})\x20(?:[0-9]{2})\x3a(?:[0-9]{2})\x3a(?:[0-9]{2})/";
content:"|20 7c 20|"; within:4;
content:"|20 7c 20|Microsoft|20|Windows|20|"; distance:0; fast_pattern;
pcre:"/\x20\x7c\x20(?:[0-9]{1,3}\.){3}[0-9]{1,3}[\r\n]$/R";

Rule dependencies

Feeds into

  • 2 rules read ET.ExfiltracaoBot · view all
Raw source ET MALWARE PS1/ExfiltracaoBot CnC Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET 1024: (
    msg:"ET MALWARE PS1/ExfiltracaoBot CnC Checkin";
    flow:established,to_server;
    flowbits:set,ET.ExfiltracaoBot;
    dsize:<200;
    pcre:"/^(?:[0-9]{2})\x2f(?:[0-9]{2})\x2f(?:[0-9]{4})\x20(?:[0-9]{2})\x3a(?:[0-9]{2})\x3a(?:[0-9]{2})/";
    content:"|20 7c 20|"; within:4;
    content:"|20 7c 20|Microsoft|20|Windows|20|"; distance:0; fast_pattern;
    pcre:"/\x20\x7c\x20(?:[0-9]{1,3}\.){3}[0-9]{1,3}[\r\n]$/R";
    reference:md5,c517e83c5f8713bce774be8e2cf21753;
    classtype:command-and-control;
    sid:2055903; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_09_17, deployment Perimeter, confidence High, signature_severity Critical, updated_at 2024_09_17;
)

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