ET MALWARE Win32/ProcessKiller CnC - Client Side

Query · suricata

flow:established,to_server;
flowbits:set,ET.ProcessKiller.Client;
content:"|00 00|"; offset:2;
content:"|c1 01 00 00 00 00 ca 00|"; distance:2; within:10; fast_pattern;
byte_jump:2,0, little, from_beginning, post_offset -1;
isdataat:!2,relative;
threshold:type limit, seconds 120, count 1, track by_dst;
target:src_ip;

Rule dependencies

Feeds into

  • 1 rule read ET.ProcessKiller.Client · view all
Raw source ET MALWARE Win32/ProcessKiller CnC - Client Side · 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 Win32/ProcessKiller CnC - Client Side";
    flow:established,to_server;
    flowbits:set,ET.ProcessKiller.Client;
    content:"|00 00|"; offset:2;
    content:"|c1 01 00 00 00 00 ca 00|"; distance:2; within:10; fast_pattern;
    byte_jump:2,0, little, from_beginning, post_offset -1;
    isdataat:!2,relative;
    threshold:type limit, seconds 120, count 1, track by_dst;
    reference:md5,1bea43ae6680c0925e6ac5909888a6d4;
    classtype:trojan-activity;
    sid:2052263; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_04_24, deployment Perimeter, malware_family ProcessKiller, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_04_24;
    target:src_ip;
)

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