ET MALWARE [eSentire] Remcos RAT Checkin 25

Query · suricata

flow:established,to_server;
content:"|38 b6 1d 2b 3b 5c 11 b4 d8 75 2c|"; depth:11; fast_pattern;
content:"|35 03|"; distance:2; within:2;
threshold:type limit, seconds 30, count 1, track by_src;
Raw source ET MALWARE [eSentire] Remcos RAT Checkin 25 · 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 [eSentire] Remcos RAT Checkin 25";
    flow:established,to_server;
    content:"|38 b6 1d 2b 3b 5c 11 b4 d8 75 2c|"; depth:11; fast_pattern;
    content:"|35 03|"; distance:2; within:2;
    threshold:type limit, seconds 30, count 1, track by_src;
    reference:md5,41c292b0cb2a4662381635a3316226f4;
    classtype:command-and-control;
    sid:2025984; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_08_09, deployment Perimeter, malware_family Remcos, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_06;
)

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