ET MALWARE Unknown RAT CnC Checkin

Query · suricata

dsize:14<>17;
byte_jump:4,0,little, post_offset -5;
isdataat:!2,relative;
content:"|00 00 00 00 ca 01|"; offset:8; fast_pattern;
threshold:type limit, count 1, seconds 120, track by_src;
Raw source ET MALWARE Unknown RAT 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 udp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Unknown RAT CnC Checkin";
    dsize:14<>17;
    byte_jump:4,0,little, post_offset -5;
    isdataat:!2,relative;
    content:"|00 00 00 00 ca 01|"; offset:8; fast_pattern;
    threshold:type limit, count 1, seconds 120, track by_src;
    reference:md5,db9fd417244157770e31fb4b39e0e97a;
    classtype:trojan-activity;
    sid:2052876; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2024_05_23, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2024_05_23;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.