ET MALWARE zgRAT / PureLogs Stealer C2 Server Connection M3

Query · suricata

flow:established,to_server;
stream_size:client,=,38;
content:"|04 20 00 00 00|"; fast_pattern; startswith;
byte_jump:4,1, from_beginning, little, post_offset 4;
isdataat:!2,relative;
threshold:type limit, track by_src, seconds 360, count 1;
target:src_ip;
Raw source ET MALWARE zgRAT / PureLogs Stealer C2 Server Connection M3 · Suricata
Esc
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 zgRAT / PureLogs Stealer C2 Server Connection M3";
    flow:established,to_server;
    stream_size:client,=,38;
    content:"|04 20 00 00 00|"; fast_pattern; startswith;
    byte_jump:4,1, from_beginning, little, post_offset 4;
    isdataat:!2,relative;
    threshold:type limit, track by_src, seconds 360, count 1;
    reference:md5,d2c7a610447b218577c31acdf008070b;
    reference:url,app.any.run/tasks/4898fff4-38e2-4c59-8eca-96611bdc3d77;
    classtype:trojan-activity;
    sid:2063215; 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 2025_06_27, deployment Perimeter, malware_family zgRAT, malware_family PureLogs, malware_family PureLogs_Stealer, performance_impact Moderate, confidence Medium, signature_severity Major, tag Stealer, tag InfoStealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_06_27, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)

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.